this morning, did the boston bombers have help? >> investigators closing in on that answer and now focusing on a mosque in russia as a list of possible accomplices grows. >> plus this -- >> the doctor told me that i had tested positive for hiv. i was stunned. >> amanda knox tells her story with brand-new details of her six-year saga, prison, panic attacks and abuse by guards. collision course. the cringeworthy video taken on a popular mountain road in los angeles. we'll show you what happens next. an emotional night on the dance floor as a surprising fan favorite is sent home.

good morning. we begin with something of a price tag stemming from the boston marathon bombing. >> a new estimate this morning says the attack did over $300 million in damage to the boston economy. that's when lost wages, retail sales and damage to infrastructure are taken into account. >> and there's also news on the investigation. for that we're joined from washington by abc's devin dwyer. good morning, devin. >> reporter: good morning, diana and john. authorities believe they've now identified a turning point when tamerlan tsarnaev, an american resident, allegedly became radicalized. this russian mosque, a known gathering spot for extremists, is the new focus of the bombing investigation. it's there u.s. officials believe that tamerlan tsarnaev met with this man, mansur nidal, a known chechen terror recruiter killed last year by russian authorities. >> my name is tamerlan tsarnaev. >> reporter: this video obtained by "entertainment tonight" is the first time we heard tamerlan's voice. the young american boxer who authorities now say had internet contact with william plotnikov,

the boxer in red, a canadian man who moved to russia and joined a terror group. the alleged connections offer new clues about what may have inspired him on a trip to russia last year. u.s. intelligence officials are now investigating how warning signs may have been missed. >> we want to leave no stone unturned. we want to see is there, in fact, additional protocols and procedures that could be put in place, and we won't know that until that review is completed. >> reporter: meanwhile, the hunt for possible accomplices continues. abc news has learned authorities identified almost a dozen persons of interest including tamerlan's widow, catherine russell, who has submitted dna samples to the fbi. tamerlan tsarnaev's body still remains in that boston morgue. an attorney for his widow says she's given permission to the tsarnaev family to claim the body for burial.

john. >> devin dwyer in washington, thank you. one final note about the boston bombings, the father of a wrongly accused teenager is considering a lawsuit against the new york tabloid stemming from the "new york post's" headline bagmen in the days after the attack. the father of the young men targeted by the article now may sue the paper. he claims his son is suffering trauma after appearing in that photo. after showing off his chops at the white house correspondents' dinner, president obama is back to serious business. in a wide-ranging news conference, the president said until there is, quote, hard, effective evidence that syria used chemical weapons against its citizens, he will not consider military action. the president also addressed guantanamo bay vowing to renew his push to close the detention facility. he also expressed concern about the dozens of terror suspects held there who are engaged in a hunger strike. investigators in mississippi say the man accused of sending ricin-laced letters to top officials ordered caster beans on ebay. ricin is derived from those beans. james everett dutschke is being held without bond in this case. officials say they found traces of ricin on a

dust mask that dut ki threw in a dumpster and in a martial arts studio he used to own. well, it's may 1st, and authorities in seattle are gearing up hoping to avoid a repeat of the violence during last year's may day march. there will be demonstrations there, as well as in los angeles where some 30,000 people are expected to call for immigration reform. here in new york the occupy wall street movement has a full day of protests scheduled. venezuela's post-election tensions erupted into a brawl in the national assembly overnight. at least one lawmaker was left badly bruised and bleeding. the punches started being thrown when opposition members unfurled a banner. there's been bad blood ever since the new president achieved a narrow victory last month. in her first television interview, amanda knox tells diane sawyer she only recently learned how she was being portrayed in the media, and as she faced charges for murdering her roommate,

she-devil, seductress, sphinx of perugia are only a few of the labels, but she says they're all wrong. here's brandi hitt. >> reporter: amanda knox released her memoir "waiting to be heard." in an exclusive interview with diane sawyer knox said she wants to clear her name. >> did you kill meredith kercher? >> no. >> were you there that night? >> no. >> do you know anything you have not told police that you have not said in this book, do you know anything? >> no. >> reporter: knox was an american college student studying abroad when she was arrested and tried for the 2007 murder of her roommate, british student meredith kercher. >> what happened to me hit me like a train, and there was nothing i could do to stop it. >> reporter: knox and her then boyfriend were both convicted in italy's highest criminal court. after serving four years of a 26-year sentence in a tiny room with only a small window, her conviction was overturned. >> did you think about suicide?

>> i did. >> reporter: in her book knox wrote about her panic attacks, losing her hair and finding out the results of a blood sample she had given. >> and the doctor told me that i had tested positive for hiv. i was stunned. i went back to my room with one of the prison officials telling me, well, you should have thought about it before you had sex with all those people. >> reporter: she listed the seven sexual partners she had in her life. >> and they leaked it. >> they leaked it to the media. >> reporter: later she was told it was all a mistake. she was not hiv positive. in march the italian court overturned knox's acquittal and ordered a new trial. brandi hitt, abc news, los angeles. >> and you will hear more from amanda knox when she sits down for her first live interview later on "good morning america." all right, time now to check the weather across the nation, it's not going to look at all

like may 1st for denver, almost to minneapolis, snow will slam the entire area with 5 or rather 3 to 5 inches in some spots, also lots of wet weather along the gulf coast and through much of the midsection. >> take a look at those readings on the east and west coast. that's more like it. lots of sun, 60s and 70s. snow zone, though, 30 degrees below normal. coming up, the new warning about ground turkey. >> and a big move for the morning after pill stirring up new debates this morning. and it looks simple, but it took cutting-edge technology to create this little guy. what makes this movie so amazing. coming up in "the pulse."

the housing market on a wild upswing right now being driven by a dwindling supply of home. and home prices have soared up 9.3% since february. that is the fastest monthly increase we've seen in seven years. now, among the hottest markets and homes is phoenix, that shot up 23%, san francisco, 19% and las vegas, 18%. there are 25% more buyers than last year. but few homes for sale. for the second day in a row the s&p 500 index opens trading this morning with a record high. now it's just a slight gain from yesterday. the s&p is now less than 3 points from the psychologically important 1600 level. some analysts say passing that mark is a signal that the current bull market has staying power. others would tell you, though, it's time to do some selling. well, apple is making the original iphone obsolete. those phones hit the market in june of 2007 but next month the company is declaring them obsolete in much of the world and vintage here in the u.s. and that basically means most people

still using original iphones won't have access to apple repair services. the country's first legal online gambling site is now up and running. ultima ultimatepoker.com dealt its first hand in nevada yesterday. games are available 24/7. players must be at least 21 years old and physically be in the state when they play. new jersey and delaware are expected to follow suit. but they're still basing regulatory hurdles. sales of humus are growing so fast in the u.s. that the farmers in virginia are now being urged to grow chickpeas instead of tobacco. it is being driven by the search for healthier snacks, sales have jumped about 5% over the past couple of years. i suppose dipping a chip in humus is probably a little point better than dragging on some tobacco. absolutely. when we come back why michael jackson's mother left the courtroom during the testimony. an all-out brawl at a fraternity party. just the latest incident at this school. the burger joint visited by

the living and the dead. did they capture a ghost on tape? more when we come back. [ indistinct conversations ] [ pizza dodging man's mouth ] ♪ ♪ [ camera shutter clicks ] [ male announcer ] fight pepperoni heartburn and pepperoni breath fast with tums freshers. concentrated relief that goes to work in seconds and freshens breath. ♪ tum...tum...tum... tum...tums! ♪ tums freshers. fast heartburn relief and minty fresh breath. i just stick the bar in the dryer like this, and it freshens my laundry for me so i don't have to think. wait. what was the question? [ male announcer ] how do you get your bounce? [ man ] stick it and forget it. [ male announcer ] how do you get your bounce?

we asked total strangers to watch it for us. thank you so much. i appreciate it. i'll be right back. they didn't take a dime. how much in fees does your bank take to watch your money? if your bank takes more money than a stranger, you need an ally. ally bank. your money needs an ally.

take a look at that. this is absolutely not any way that a driver wants to end up, especially not a police officer. this was a memphis cop who was chasing down a driver for not wearing a seat belt when he lost control himself. he hit a utility guy wire and went right up the power pole. he wasn't hurt, though, but he did end up with a traffic ticket all of his own. >> i'm sure he's getting teased by his fellow officers today. >> i'm sure it was just about the teasing. >> let's check the morning roads right now, the conditions there. rain will slow the commute along the gulf coast and from dallas north to the great lakes. you may need your four-wheel drive or tire chains to navigate through some snow expected from denver northeast into parts of minnesota. and if you're flying, airport delays are possible in

new orleans, miami, denver and minneapolis. a major legal development now in the case against george zimmerman. the former neighborhood watch volunteer decided not to seek immunity under florida's stand your ground law. he appeared before a judge yesterday. >> defense attorneys say it was a tactical move so zimmerman can get a trial before a jury as opposed to a judge deciding the case. this trial is set to begin in six weeks. an emotional day for michael jackson's mother leaving a los angeles courtroom in tears after testimony in the wrongful death lawsuit against concert promoter aeg. a paramedic testified when he arrived at jackson's home the day he died, he didn't recognize the singer because he looked like someone at the end stage of a long disease. the detective also told jurors that jackson's doctor, conrad murray, may have been motivated by money. police in the d.c. area are trying to figure out if the series of high-end smash and grab robberies are linked. the latest at a cartier story in maryland. the suspect was buzzed in then detectives say he kept the door open for a group of aggressive

masked robbers who physically took control of the store. the entire robbery took less than one minute. and we're seeing new video from a massive brawl over the weekend at a fraternity party in tempe, arizona, involving students from arizona state. five students were hurt, five others were arrested. this incident and other recent violence has local lawmakers calling for a crackdown on disorderly conduct. a california couple reunited with their baby boy after losing custody following a hospital visit. it all started when anna and alex nikolayev took their 5-month-old son sammy to a sacramento hospital with with flu-like symptoms. now, against medical advice, they moved him to another hospital for a second opinion. the next day child protective services took sammy away citing neglect, but a judge stepped in giving the child back to his parents. >> we can walk in when we want. we can be with him. we can hold him in our arms. we don't have to be scared anymore. >> workers say the second hospital cleared their son to go

home. girls as young as 15 can now buy the morning after pill without a prescription, and it will be available on drugstore shelves no longer locked behind pharmacy counters. the fda lowered the age to buy the plan b one step emergency contraception from 15 to 17 or rather, yes, from 17 to 15, but the move falls short of a court order requiring the pill be made available to women of all ageses. and a big warning for people who eat ground turkey. new testing on several brands of meat show most of it is tainted with dangerous bacteria. "consumer reports" tested more than 250 samples of ground turkey and found 90% of it contained e. coli, staph, salmonella and other forms of infection causing germs. scientists strongly urge you to thoroughly cook the meat to avoid getting sick. a frightening incident from l.a.'s famous mulholland drive. a motorcyclist coming around a turn plows right into two guys on a bicycle. check that out.

the guy who got hit first spent some time in the hospital. he's already out. he did not suffer any broken bones. the other cyclist and the person on the motorcycle were not seriously hurt. >> ouch. now, while you take a look at that and ingest it, how about some sports for you. nba playoff highlights now from espn. with your "sportscenter" update, i'm chris hassel. last night two pivotal playoff games in the western conference. we start with steph curry and the red hot warriors trying to finish off the nuggets, but the nuggets weren't done with curry. physical in this game. javale mcgee with a hard screen and then watch kenneth faried, maybe a little trip on steph. curry not pleased. first curry with an opportunity to pull the warriors within two late missing. klay thompson missing. and the nuggets survive, 107-100. we'll have a game six. that fan probably won't be there. he's a nuggets fan, and he got under the skin of curry. curry, 15 points, 1 of 7 from

three-point land. game six on thursday. game five between the clippers and grizzlies. first quarter, blake griffin giving l.a. a one-point lead, but griffin had trouble with a high ankle sprain. he suffered it in practice. fourth quarter, grizzlies up seven. putting it away. zach randolph, 25 points, 11 rebounds. a road team has won a game in this series. grizzlies lead three games to two. game six in memphis on friday. three more nba playoff games later on tonight. we are in full swing in the nba and the nhl playoffs under way, as well. i'm chris hassel. have a great day. all right. take a look at this video. a burger joint in the beautiful georgia city of savannah claims it has a ghost, and you might agree. look at the bouncing light on the right side of the surveillance video in that bar there. >> and if that's not convincing enough, watch this rack of cups tumble right over on its own.

nobody was touching it. you saw that. it's no wonder that savannah is considered a haunted city. >> do you know that my first television market was savannah, georgia, and, yes, the cemetery there, a lot of famous haunted places in savannah, georgia. >> yeah, no, thanks, i'll stay as far away from there as possible. >> not a fan of ghosts? >> not at all. coming up next on "the pulse," what it took to create the tiniest little movie ever. we're going to show it to you. and someone help this guy, please. the weatherman with the hiccups at the worst possible time. >> bear with me. excuse me. bel air to meyerland, the sunny side. here's the big pic. i had enough of feeling embarrassed about my skin. [ designer ] enough of just covering up my moderate to severe plaque psoriasis. i decided enough is enough. ♪ [ spa lady ] i started enbrel. it's clinically proven to provide clearer skin. [ rv guy ] enbrel may not work for everyone -- and may not clear you completely, but for many, it gets skin clearer fast, within 2 months,

and keeps it clearer through 6 months. [ male announcer ] enbrel may lower your ability to fight infections. serious, sometimes fatal events, including infections, tuberculosis, lymphoma, other cancers, nervous system and blood disorders, and allergic reactions have occurred. before starting enbrel, your doctor should test you for tuberculosis and discuss whether you've been to a region where certain fungal infections are common. you should not start enbrel if you have an infection like the flu. tell your doctor if you're prone to infections, have cuts or sores, have had hepatitis b, have been treated for heart failure, or if you have symptoms such as persistent fever, bruising, bleeding, or paleness. if you've had enough, ask your dermatologist about enbrel.

as well as they could because they don't take it with food. switch to citracal maximum plus d. it's the only calcium supplement that can be taken with or without food. my doctor recommends citracal maximum. it's all about absorption. do you really think brushing is enough to keep it clean? while brushing misses germs in 75% of your mouth, listerine® cleans virtually your entire mouth. so take your oral health to a whole new level. listerine®... power to your mouth™. ♪ i've got the moves like jagger i've got the moves like jagger ♪ ♪ i've got the moves like

jagger ♪ it is time to check "the pulse." stories you might be talking about today. we'll start off with the tiniest movie ever made. take a look. a boy dancing, a ball bouncing on a trampoline. can you guess how this was made? >> i'm going to tell you. scientists over at ibm repeatedly rearranged individual carbon monoxide molecules. you heard me right. those are molecules. to gain this effect they then used a microscope that magnifies the surface over 100 million times. this technology, by the way, is eventually going to help data storage become even smaller. >> that is just incredible. all right, a story like this one about a fellow tv news professional might be some bad karma but we can't resist. >> on the west side, excuse me. i have the hiccups, of course, what happens when we have heavy weather. but bear with me. excuse me. bel air to meyerland. the sunny side. here's the big -- excuse me, big picture. >> that's weatherman david paul, station khou in houston.

obviously as you can tell he is suffering from quite a bad case of the hiccups. he gets full credit from everybody here, though. he stays wit. did nearly three full minutes like that. >> have you ever had hiccups on the air. >> i've sneezed. >> i've sneezed. never the hiccups. well, an adorable baby girl made her debut in ohio a long way from her old home. >> gladys, three months after she was abandoned by her mother. the gorilla was transferred from texas. now being raised by ten human caregivers. wow. equipped with fur there that make her feel right at home. >> oh, gladys will soon be paired with a female gorilla that's willing to step up as her surrogate mom. oh, what a cutie-pie. >> i know i'm not supposed to say this, but i want one of those. i want me a little baby gorilla. >> wait till gladys is about 3 she's twice your size. >> especially my new york city apartment.

probably wouldn't work out. >> might not fit. >> no. for some of you, your local news is next. with my keurig vue brewer, i can brew my coffee just the way i love it. how do you do that? inside the brewer, there's this train that makes coffee stronger, bigger, and hotter! actually, i just press this button. brew keurig's best cup with the keurig vue. but with kids growing up fast, fighting seven signs of aging gets harder. introducing total effects moisturizer plus serum. for the ninety-two practices, two proms, and one driving test yet to come. she'll need our most concentrated total effects ever.

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>> abc7 news starts right now with breaking news. >> the breaking news, fire is burning in the bay area right now on a red flag warning day. >> the fires broke out overnight in napa county. if you go outside around san francisco and the bay you may smell the smoke. it blew into san francisco because of gusting wind. the national weather service shows the heat signatures from two different fires burning. here are the specifics. cruise working on one blaze in oakville cross road at 15 acres in napa foothills in yontville area. the other is near highway 128

which is 25 to 30 acres. we have a crew headed that way. they will bring you the latest on the two fires burning. >> the three factors you need: dry condition, hot weather and winds. >> we could have them. we will check with mikeologist mike nicco. >> the fastest ends are 74 miles per hour. now here the fastest winds are 45 or 50 miles per hour. the wind advisory continuing in 11:00 possibly up to 60 miles per hour and dry winds are blowing out through so we have red fire warning. the gusts slowed down after 11:00 we will keep the red flag wanting, high fire danger until 6:00 today for the north bay mountains and east bay hills and diabolo range. the elevations above 1,000 feet.

we will have near record high temperatures, 84 to 92 inland. around the bay, 83 to 88 and the coast, 70's to 75. leyla? >> we have closures because of the fire. westbound highway 128 you will see both directions closed. on the other fire in napa county, near oakville cross road, c.h.p. is saying it does not appear there are closures but the fire burns. we have a high wind advisory issued through napa. and we have another high wind advisory for anyone driving high profile vehicles. >> developing news in the murder