right now at 11:00, a mystery in prince george's county. detectives are looking for clues in a homicide investigation. we're live with what we're learning about the victim. breaking news from the entertainment

actor martin landow. and new details tonight after a run away boat throws people over board and spins out of control. he was found on the street and wouldn't respond. he later died. good evening. new tonight police are investigating a homicide. the victim was discovered on 60th avenue. news 4 darcy spencer is on-the-scene with what we're learning about this case tonight. darcy. >> reporter: well, erika, prince george's police still have a murder mystery on their hands tonight. in fact they still have not received any missing persons reports. one neighbor tells me tonight she heard a car drive off at a high rate of speed early this morning, and late tonight i spoke to

the body. residents in this quiet riverdale heights neighborhood were awoken early sunday with some startling news. >> well, one of the neighbors that live around the corner here came and knock on my door this morning and told me there were police out here and they found a body on the street. >> reporter: i spoke to the man who discovered the body. he provided news 4 with this photoy. we blurred out the victim's body, but it does show medics on scene. >> it's really scary. >> reporter: police say they have no idea who the man was, where he was killed, or how he ended up here. but they do know he was murdered. he had suffered trauma to his body. he was pronounced dead at the hospital. >> i was just thinking how did that happen here? >> reporter: marty newhouse the head of the association

>> reporter: it certainly was. now prince george's county police telling me tonight there was no indication this man had been sexually assaulted. they also want to emphasize the fact they have very little to go on in this investigation. they need people to come forward, provide information if they saw anything, and certainly come forward if you have any idea who this man was so they can notify his family. >> dparsy spencer, live in riverdale heights. thank you. earlier this week chief hanks announced officer shifts will be extended to 12 hours. we've got a map showing the locations of those 12 homicides and this one day in riverdale heights. just open our nbc washington app to see that map. now to that breaking news from the entertainment world.

he died yesterday at a hospital in l.a. the reason is unclear, but he apparently suffered some sort of health compication during a brief stay there. landau had just celebrated his 80th birthday. you'll find information about his life, career and most famous roles on our facebook washington page. often imitated his classic night of the living dead turned zombie movies into horror films and director commentaries he died following a battle of lung cancer. he was 77 years old. all right, switching gears. tonight we have had a very nice weekend. but sweltering heat is coming back and h

the temperatures even harder to deal with. and with that introduction, here's storm team 4 meteorologist amelia draper with what we can expect this week. >> well, it's not unusual we're talking about sweltering heat and unbearable mugginess here in the d.c. metro area. as we start the workweek, it's going to be humid. greeting you tomorrow if you haven't been out tonight, well, the mugginess is already setting in. tomorrow feeling like temperatures in the mid-90s. by wednesday it starts to feel like we're in the upper 90s. and then thursday and friday feeling like temperatures are around 100 decrease. how do we know how hot it's feeling outside. ? well, we look at the dew point temperatures for the amount of moisture in the air. that's where we were this weekend. this is

now. 71. it's going to be muggy at least friday. i'll have that timing and outlook coming up at 11:18. >> and don't forget her emoji forecast. new developments tonight in that deadly flash flooding out west. we are learning three children are among the nine people who have been killed, one young man still missing. >> reporter: in an instant a creek bed became a rushing river. it happened saturday in central arizona at a popular swimming hole where visitors tried to get some relief from the summer heat. >> a large family group was down by the river reck rating. it's a reactional area a lot of people come up to. and the flash flood came through and washed 14 people away from the camp. >> reporter: rescuers searching by land.

subject, and then work down as far as you can. >> reporter: and by air while families wait and worry. >> it's my brother. he has to be found. they can't stop looking until he's found. >> reporter: it's monsoon season in this part of arizona. and it was started by heavy rains up stream. >> it can go from a foot deep to 10 feet deep in a matter of minutes. >> reporter: minutes that turned a day of fun into a tragedy. lawmakers here on capitol hill were expecting to get a key piece of information on the gop health care bill tomorrow. not anymore. today the congressional budget office says its postponing its analysis of the legislation. the senate is already delaying a highly anticipated procedural vote on the bill because john

surgery. >> oh, my god! a wild, scary scene at lalake in indiana this weekend. a power boat spins out of control. the ten people onboard all thrown into the water. nbc carry sanders has new details on what went wrong and who could be to blame. >> reporter: a frightening scene, a 21 foot motorboat spinning out of control and no one's behind the wheel. the chaos unfolded when police say the 21-year-old who was operating the boat hit a high rate of speed and hit a violent turn. by the time help arrived, the boat was stalking like a motorized shark making circles at 30 miles per hour. a sheriff's deputy throwing a rope to entangle the boat's propeller.

officer's patrol boat. >> what are they doing? >> reporter: another officer on a jet ski leaps onto the boat, finally bringing to a stop. >> once it was close enough, it was just a matter of stepping into that boat. >> reporter: authorities say alcohol was a factor. the boat's operator was arrested and faces charges. carrie sanders, nbc news. tonight we're also learning more about a deadly accident in alex swrandria. police now looking into whether the driver experienced some sort of medical emergency. police said at first it appeared to be a minor crash with little damage to the car. but the driver, 22-year-old zane suzeky, died a short time later at the hospital. a popular pool in north county has been

woman who did so much. she was just 21 years old when she was killed in a traffic accident back in 2002. she was a swim coach at the western county outdoor pool and on the way to that facility when this happened. those who knew her said her influence will not be forgotten. >> she actually built our spirits. she actually motivated us to be stronger and better than what we are. >>shield be overwhelmed and extremely happy plus a little embairsed and say why are you making all this fuss about me. >> since her death, hundreds of young swimmers have received scholarships in her name. there are also making stops at medical center and bethesda, and that's because

repairs. you should allow for extra travel time. of course we've got more information on the closures in our nbc app. you can search those by search searching red line. if you don't watch your speed, it's going to cost you. volunteers explain why cleaning up this local cor dor is important, whether you live on the street or not. and new tonight, d.c. hosts the opening ceremony for the robotics contest. the competition hasn't even started but one team feels like they've already won. a busy night on sports final. the nats trade for some much needed bull pen help. but will the move help them win the world series. we'll break it down. and a prince george's cou

community. all that and more just

no matter how the competition ends three days from now memberoffs a robotics team from afghanistan are already feeling like winners. the 16 age girls were greeted with thunder s applause and cheers when they were greeted today at constitution hall. they arrived in d.c. less than 38 hours ago to take part in an international competition involving more than 150 countries. it took a lot of wrangling to

of afghanistan, six teenage girls measuring, testing, and building a robot. here only one in five girls makes it past middle school. but she wants to set a different example. >> i want to show them nothing is impossible. >> reporter: this team is entering the first world war challenge. like designing robots to clean contaminated water. >> teams coming here to address a common problem. >> reporter: after spending months building their robot, all six girls packed into a taxi making the five 500 mile trips to get a visa. each time they were denied. afghanistan is not one of the six mostly muslim countries under the

travel ban. >> we were so hopeless because we didn't get the visa, and we came two times. >> reporter: their case sparking international attention. and then a last minute intervention by the president himself. the girls were granted a visa. elated they packed their bags to make the journey. at an airport just outside washington, d.c. fans waited to greet them at midnight. >> they are powerful. they are strong, and they are not silent anymore. >> reporter: for rudauba, a dream come true. happy to make history. morgan radford, nbc news, new york. >> beautiful story. a mother from montgomery county is carrying on the life's work of her son. he was 13 when he died of complications with a neurological disease. but before he left, he earned

books of poetry and peace activism. today his mom put on an event she's calling the 2017 peace party, signing copies of matty's books. matty's mom says she wants her son's message to go national. >> matty only lived 13 years. matty's been gone almost as long as he was here, and look at this. his message is growing. people want peace. people need peace. >> the matty's to panic convention was put on today. beltway drivers take note. a new enforcement program begins tomorrow to crack down on drivers who speed through work zones in maryland. this is an ongoing effort to prevent crashes. this time state officials will be setting up

cameras along the beltway. this is where crews are doing work on the bridge. the speed on the beltway is 55. well, starting tomorrow drivers caught going 12 miles per hour or over that will get a warning. and then starting july 7, drivers will get a ticket. >> as a resident, i want to feel safe. and it's also nice to walk around and see it's clean and people care for it. >> sure it is. as many as 80 volunteers came out this afternoon and brought their sunny attitudes with them. often breaking out in cheers and had their signs. it was a great day to be

outside. and it was a beautiful day. high temperature, 8 # degrees. and as i mentioned earlier, if you haven't been outside yet, the humidity is back and here to sfa throughout the workweek. there's a chance of afternoon and evening thunderstorms, that threat, tethough especially tomorrow looking pretty low. as we look to wednesday and beyond, well, it's all about the heat and humidity. we're talking 90s by wednesday. 73 in frederick. 7:00 a.m., mild start. 75 degrees, plenty of sunshine. clouds increase throughout the day, partly sunny by tomorrow afternoon. by lunchtime, we're in the upper 80s. again, there's a chance of a thunderstorm tomorrow afternoon and evening. can't rule out some heavy rain and thunderstorms that do develop. but, again, most of us i tnk

tomorrow completely dry. 7:00 in the evening, we're right around 85 degrees. i want to show you future weather. i'm starting off at 8:00 a.m. pairbyically clouds. but then you start to see clouds in the area. here we are at noon. and then notice back over the mountains, back out in areas to the west, that's going to be the best chance of where you're dealing with rain and thunderstorms. 6:00 in the evening, maybe some parts here. as we move towards the over night hours, we're dry and not worried about rain at that point. so the commute to work tomorrow for most of us is going to be dry for most of us. if you're heading to ppool, i think you'll be just fine. i wouldn't cancel your outdoor plans tomorrow just for that

dinner out more so than that small chance of thunderstorm, it's going oo be kind of hot and uncomfortable. the pool outlook, well it's looking good these next two days. if i was heading to the pool on tuesday, i would say go. just know you might have to get out for a little bit. tuesday a high temperature of 91. there you see that small chance again. 30% chance for some late day thunderstorms. feeling closer to 100 on thursday. 97 feeling over 100 in some locations. right now, erika, i want to quickly mention next weekend unfortunately some storms in the forecast. >> okay, thank you, ma'am. mother nature put on quite a show. did you see this? >> i love

>> it shows the northern lights dancing in the sky above north dakota. this is beautiful all before sunrise. the spectacle continues tonight and can actually be seen in about eight states as long as you're away from the great city lights. still ahead the national

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big day for the nats today. carolyn maloney joining us tonight. hello. >> hello, big trade, big win, yes, a huge day. right now we're going to get into the win that is bringing in so much relief, a big league that did not go away to cincinnati. this is where the fun stuff happens, at least this is what we're

the snats having a lot of fun there. daniel murphy getting it started. he just tags this ball deep to right. and good-bye. two run shot for murphy. 15th of the season. the nats taking an early 2-0 lead. now on the sixth this time with two on. and murphy hammers another one to right. that is gone, too. three-run homer, monster day for him. two homers, 5 rbi. nats up 7-2. later in the inning adam lynn inviting himself to the parade. they go on for the sweep tomorrow at 4:30. to baltimore, sun's out, scouts are out. some boy scouts watching the

brian hammers this ball to the seats in left center. two run shot. had no problems since making his first start since the cubs traded for him just mowing down today. cubs blank the birds 8-0. to wimbledon, the royals, they're going crazy on the inside. crazy for roger federer. not the second time. federer puts it away. he's going to take the first set. now fed took the second set. chillage gets a rack on it, but federer serving with champion ace.

in the open era to win wimbledon without losing a single set. elaina deladon out with a sprained ankle. and new york took advantage. a sweep 3. mystics lose by 30. 85-55 the final. and coming up tonight on "sports final," we've been talking about this more an a year. now we're less than 24 hours away from this deadline. curt cousins, the red skins, will a deal get done? plus steph curry making his father jump in a cold lake. got that coming up. >> gosh, it's going to be an exciting day tomorrow. will you be able

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tonight on "sports final" -- >> how do you like it now? >> ticktock on the kurt clock. the redskins and kurt cousins quickly running out of time. >> you like that, you like that. >> the nationals crushed. plus roger federer cementing his spot as one of the all-time greats. though some aren't impressed. the best way to