at denver police headquarters. rick, you learned more about the investigation this afternoon. >> reporter: jim and karen, it was a terrible crash that killed one and injured many others. ultimately this case has now been closed with the cause undetermined. but now we are able to see what happened. the camera records the school bus as it's approaching the level for pickup area. but you can clearly see how it runs righ directly into the sport peeler. 's tape was used in the investigation along with other information. but ultimately, no cause was determined for the crash. >> we can see dynamics but we can't make up people, we can't make out certain evidence but we can find out let me look and see is there something about the travel nature of the bus that gives me a clue as to what happened. certainly that wasn't the case. >> reporter: emergency responders rushed to the scene. the legacy high school football

after returning home from a game in california. the accident happened while the bus was making an unexplained return to the terminal. the driver carried -- an autopsy indicated she had an enlarged heart. but did not reveal that a medical condition was involved in what took place. the bus was 10 feet 11 inches high, the overhang was more than a foot lower. but denver police did not find that the driver drove off the road to avoid a collision. >> it's hard for me to conclude that because again, we had witnesses on board the bus who indicated that there was no effort to stop emergency braking. >> reporter: three legacy high school football coaches were seriously injured in the crash. but all have now returned to their jobs. i spoke today with the husband of the bus driver who was killed.

headquarters, rick salinger, cbs4 news. now to our weather alert tonight copter4 showing us a cool but sunny evening over the metro area. that will is going to get chillier. freeze warning is in place for the metro area and ed greene joins us to tell us how cold it's going to get. >> after a nice fall day, 59 downtown, 61 at the airport, we will drop to between 30 and 35 degrees. these little guys behind me, tough but if you have delicate vegetation, you've got to get out and cover them because they could be damaged or killed in his freeze. let's take a look at where it is. including the greater metro area up and down the front range, over to the grand valley to the west and then way out to the east, it's a frost advisory for yuma, kit carson and cheyenne. once again temperatures could drop between 26 and 32 degrees. metro area 30 to 35, not everybody will see a freeze or

just better prepare. then, what happens tomorrow into your weekend? i got a pleasant surprise for you. that's all coming up. thank you. happening now, mcclure pass in colorado's high country closed due to this massive rockslide, these pictures from cdot show the damage up there, no word yet on how long it's going to take to remove all of those rocks. and fakes the section of road. mcclure pass is west of aspen near marble. hillary clinton and donald r in about two hours. tonight's debate in las vegas the candidates running mates are done debating so they were on the trail today, republican might -- mike pence was here in durango, democrat tim kaine campaigned in ohio and north carolina. per -- political specialist shaun boyd joins us tonight. the attention turns back to trump and clinton. >> that's right. the debate will include six topics. immigration, the supreme court, the economy, national debt and entitlements, foreign-policy and fitness for the presidency.

wallace from fox news. who is widely known as a tough question or by republicans and democrats. and the format will be the same as the first debate with the candidates behind podiums fielding questions from the moderator. as hillary clinton and donald trump meet in las vegas for their final debate, a new national poll shows clinton ahead by nine points. >> i don't believe the polls anymore. i don't believe them. >> reporter: trump claims the election is really saying both at the polls which is not supported by evidence and by the media which he says is biased against him. >> take a story that they know is not so and they'll put it out there. and they really poison the minds of the voter. and that's tremendous. to me, that's media fraud. but you could also call it voter fraud. >> that is nothing. >> reporter: both campaigns have been flagged by controversy since the last debate. more than half a dozen women

sexual advances. suggesting democrats paid the women. clinton meanwhile is dealing with a daily release of hacked e-mails from her campaign manager. with controversial remarks about latinos, african- americans catholics and evangelicals. she's been off the campaign trail preparing for the debate for the last week. in colorado springs tom told me he's ready too. >> i have been prepping. i think we won the second debate very easily. i think we did very the second one by almost all estimates. we won it easily. and i think i'll be at least equally prepared. >> reporter: the commission on presidential debates announced it change the way bill clinton and melania trump entered the debate hall which meets the two spouses will not shake hands prior to the debate, but no one knows if the two candidates will this time. jim? >> okay. thank you for that. you can catch the debate here on cbs4 and on

7:00 tonight at unlv. many colorado voters have received their ballots in the mail. we've gotten a lot of questions about how the postage for returning ballots works out. in denver it is $0.68. so the secretary of state says it's just safest to simply use two forever stamps and don't forget to sign your ballots. and get it in the mail by november 1st. we have all that information at the campaign 2016 section of cbsdenver.com. to the latest on efforts to fith the fire has burned more than 16,800 acres. still no containment on this one. pueblo west fire sent us these pictures today are -- the flames destroying some buildings. at least five homes are gone and evacuations near westcliffe remain in place right now. also new information tonight on a crash that shut down a part of wadsworth boulevard. the man who was hit by a car while riding his bike has died.

at around 7:00 a.m. at the intersection of wadsworth and 57th avenue. no word yet on whether the driver is going to be facing any charges. as we shall be first on four, a man suspected of recent graffiti on the du campus goes to court but not for the most recent vandalism case. the school warned students this week after the graffiti showed up. because police told du that suspect has a violent past. university campus, police were looking for the suspect and we were able to find him today. >> reporter: jim, we received a tip the suspect would be in court today. on unrelated charges. so we took a chance and that's where we found him. want to give you an example of his alleged handiwork. you see the distinctive black lines at united smith -- at the united methodist church. it appears the hunt for this man samson whittemore may have ended. samson whittemore walked into a denver courtroom wednesday, leaving behind a trail of questions. the 32-year-old registered sex

past. he's accused of spraying graffiti across the campus at the university of denver and at a nearby church. >> that's scary for anybody knowing that there's a violent offender. around campus. >> reporter: tuesday students received a safety alert. authorities posted which more space across the campus. the search ended wednesday when the suspect appeared in court to answer to previous graffiti charges. he also agreed to meet with denver police thursday ga >> i feel safer now. >> reporter: abigail skadden says the fact that whittemore showed up in court is a huge relief. >> i'm really great -- i'm really glad he showed up and i don't have to worry about other people and my roommates, don't have to worry about running into any danger. >> reporter: whittemore would not discuss the case with jamie leary. instead shaking his head and mentioning the word media. the suspect apparently out of the shadows, du students like

and i got the message from the school. and i was really's -- it was scary at that moment. i feel safe now. >> reporter: after hearing that whittemore showed up in court du sent me a statement saying we are glad to know the suspect is cooperating and hope that he presents no further threat on campus or the surrounding area. once again, samson whittemore expected to meet with denver police tomorrow. live in denver, mu explosion rocks a neighborhood in portland, oregon. utility workers may have caused this one. >> this show you -- the changes coming to airlines designed to protect your rights when you fly. we have clear skies tonight, that's why we got the freeze warning out after the third day in a row, a little snow up into larimer county. even some lightning strikes going on. we'll tell you about any showers coming our way and how cold it's going to be tonight

weekend.

developing now a massive gas explosion destroys an office building, and s eight people were hurt today including three firefighters, one with a broken leg and two cups. the blast was this morning at a spa business a construction company had warned people to evacuate. after accidentally damaging a gas pipeline. obama administration proposing tough new rules for the airlines. they are meant to protect you the passengers. it includes mandatory baggage fee refunds to passengers if bags are delayed. airlines must also clarify all fees charged for seat

preferences and luggage. there could be more transparency when you buy a ticket online. sites that sell plane tickets will be banned from favoring one airline over another. some of the rules will take effect in the coming months. others are still being finalized. right now alberson stores along the front range have officially become safeway stores. albertson's acquired the safeway grocery chain last year. it is now rebranding stores around the country under one name. overnight crews changed the signs at eight albertson's in the denver area. had major renovations or are in the process of being renovated. the cdc warning all pregnant women who recently spent time in florida miami- dade county get tested for the zika virus. recommendation is for expectant moms who visited that area since august 1st. csu is at the forefront now of zika research including testing an ingredient found in grapefruit to see if it can stop the mosquitoes that spread that disease.

made the trip fort collins. sounds promising. >> reporter: absolutely. enough that the national institutes of health is sponsoring the study. the ingredient comes to us from a swiss company. these are the same people responsible for stevia and resveratrol. ashley jammage collects mosquitoes. 10 per jar. 80 mosquitoes. the kind that spread the zika virus. ashley is dying to kill them. in jars coated with the essence of grafr their back. but still twitching. so it's not like they die immediately. >> reporter: here at colorado state, researchers are finding that that citrus ingredient is showing lethal potential. >> certainly seems to be killing mosquitoes at a certain concentration. >> reporter: associate professor brian forte explains it, found in grapefruit and alaskan yellow cedar trees. fda approved fragrance and

it's in a lot of cosmetics. >> reporter: research shows it can repel tics, csu is studying if it can both repel and kill zika infected mosquitoes. using sheep's blood they create two mosquito feeders. one smeared with nootkatone. >> we put it on our thumbs. >> reporter: these aedes aegypti mosquitoes that also spread zika ignored the one with new town -- nootkatone but devoured the other. >> so far we can say it's a good repellent. >> good. research will determine if nootkatone is the answer to battling mosquitoes and other pests. naturally. now, i'm told if this turns out to be a potent insecticide, it has the potential for use on mosquito nets in africa to prevent malaria and even here to fight the west nile virus. >> such good work up there. fascinating. >> they are at the forefront when it comes to muscular research. >> really neat.

ski season. a-basin plans to open friday morning. they will be a party in the parking lot. skiers and boarders will be able to hit the high noon trail, loveland opens -- hopes to open in the next week or two and it green chili at night, chilly enough to makes no. >> the weather is cooperating with snow machines. 10:00 last night remember we had the snow and rain right down into larimer county. i said i was going to leave a few isolated showers. good thing i did. the metro area right about there, we saw sprinkles and a little snow mixed with rain in the foothills. it all moved out to the east and slowly, we had showers all the way to the early morning hours. this is about 9:30:10 and finally it is gone and then skies cleared. a little of that dipped into larimer county for the third in a row. getting a little slow in larimer county. big picture lots of clear skies

clear skies no blanket holding the heat in. heat radiates upwards. a freeze warning from 2:00 a.m. till 8:00 a.m. all along the front range including the metro area. grand valley and then further east, yuma kit carson and cheyenne we have a frost advisory. so chilly night in store. as we take a look the cool air, down more cooler air trying to nudge in there, that's keeping this in the rain and snow mix and cooler air right into colorado. take a look at temperatures only in the 40s and 50s to the north. but as you look to the south, that's where the warm weather is. 88 in miami, 90 dallas, 93 brownsville, 91 in phoenix. some of this is going to start rotating up into our area just in time for the weekend. 61 and 65 is what we did today with 38 and 41. 64 and 36 would be normal. bailey 48, northeast arvada 59, 61 fort collins, brush 63, 57 and 56 right now northwind at 16. 27% humidity.

take a look at this little gold on the leaves, a little snow on the ground opens the boat. this one from pete perera from bear creek lake park. what a majestic bird that is. u.s. symbol there, the bald eagle. and russell carlton here, keystone they are going to open november 4th and the snow guns are going. temperatures for tonight look at the 20s and 30s over eastern plains. teens and 20s for the high country, 20s and 30s out west. for tomorrow, the eastern plains. 50s higher up and out west temperatures in the 50s and 60s. here is your denver forecast. tonight again freeze warning in effect, 35 and 31. then for tomorrow look for mostly sunny skies, still on the cool side with lower 60s but then we start to warm it up, 72 on friday, 78 saturday, 77 sunday. even monday for monday night football 73 degrees. >> everything looks great. will the cubs bow out?

we'll see more of devontae we'll see more of devontae booker. about a year ago, 30 ethiopians were killed by isis. reporter: mass execution of ethiopian christians... mike coffman was the only one that reached out to our community. he went to every ethiopian church. he was there, and he was sharing the sadness that we were actually experiencing at the time. he says what he means, and he does what he says. that means a lot to us i'm mike coffman,

we love c.j. anderson but devontae booker is exciting. >> cj is not going anywhere but if you watched the last couple games you notice the coaches have called on booker to provide a spark in the running game. the rookie has come a long way. he actually fumbled on his very first carry in the nfl. last thursday in san diego he

rushing yards including a season long burst of 17. cj is still the number 1 guy but don't be surprised if you start to see booker get more playing time. >> i think when he's had opportunities he's done really good things. you know? as a young player we're trying to get him going as far as protection and those type of things. he's starting to handle himself better. so i think he deserves more opportunities to touch the football. when he's had the opportunity he's done good stuff. the super bowl mvp getting a bit welcome at green valley ranch high school. he was there celebrating the fact green valley ranch was recently named a national blue ribbon school. talked to the students about the importance of education and signed autographs and of course considering it was von miller they did some dancing as well. >> i think we were all a little bit too shy to get there. i had a little bit of stage fright. i felt like i was "dancing with the stars" again.

but it was amazing. assembly. and i am honored just to even be here. >> broncos back to practice tomorrow. only two teams scored more runs than the cubs. red sox and rockies. but the bats have fallen asleep and if they don't wake up in a hurry, chicago is going to be in even more trouble. the copies were shut out in games two and three of the nlcs. the first time ever ever the cubs were shut out in back-to- back postseason games. consider this. chicago will shut out all season. so the problems at the plate not something they are used to on the north side. >> i'm so bad at drawing lines in the sand. again for me it's about putting this one in the wastebasket and come back and play tomorrow. i can't get so dramatic about it. i want our guys to play our game and be more offensive. and then hopefully pitch like we normally do. but it's obvious. we have to hit the ball better. >> some long faces in the stands and in the dugout.

punched their ticket to the world series.

donald trump and congressman coffman would punish women. and coffman tried to redefine rape to mean only forcible rape. in coffman's bill, victims who were drugged, even minors, victims of statutory rape, would not be considered rape victims.

time to find the other blanket. >> clear skies, going to get chili. between 30 and 35 degrees. rest of the forecast, 62 on thursday, 10 degrees on friday, look at your weekend, mid-to- upper 70s all the way through monday. perfect night for football. "monday night football." 73 to start. game time in the 60s. >> fantastic.

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