austin garrett/chattanooga, tennessee police >> "the driver's driving history did include a minor wreck in september of this year investigated by our agency that's also part of investigation." ((kirsten joyce)) >> as for walker's condition at the time of the accident -- toxicology results do not indicate that he was under the influence./// ((brian loftus)) >>> the mohave county sheriff's office in arizona is asking for your help identifying she was found between the hoover dam and kingman back in september. they describe her as approximately five-seven and between the ages of 13 to 17. if you recognize the teen from this reconstruction image... you're asked to call mohave county sheriff's office./// ((kirsten joyce)) >>> metro police are also sharing some tips to keep you safe... because we tend to see a rise in crime this time of year. shoppers should only shop during daylight hours when possible... and with a friend. surroundings. don't overload your arms with boxes and bags.. in the event you need to defend yourself. and be sure to park in a well-lit area. of course -- if you ever se

austin garrett/chattanooga, tennessee police) "the driver's driving history did include a minor wreck in september of this year investigated by our agency that's also part of investigation."additionally the n-t-s-b says the bus wasn't even supposed to be on the road where it crashed. crashed.(christopher hart /ntsb chairman) "the course of looking at the history of talley road, we just ascertained that talley road was not on the designated route for that school bus."as toxicology results do not indicate that he was under the influence.(sgt. austin garrett/chattanooga, tennessee police) "we received toxicology reports back today from the tennessee bureau of investigations that shows no trace of alcohol or drugs in the driver's system."i'm reid binion reporting. 3 3 3 thanksgiving: dry for the holiday with average temps in the low to middle 40s. more clouds than sun. wind: light w 5-10 mph.black friday is chilly in the upper 30s with a few flurries possib continued west wind. thanksgiving weekend: some sunshine returns for saturday with dry weather. temperatures start to warm up becomin

again, criminal investigation, brief update, a few questions after, sergeant austin garrett, a 24 year veteran of the chattanooga police department, commander of the train division, the lead of this investigation, is going to give you those details. thank you. >> as chief fletcher said, i'm sergeant austin garrett, commander of the chattanooga police department overseeing the accident that occurred on monday. currently the investigation is still ongoing, we're in the early stages of the investigation. there's a great deal of physical and testimonial evidence to acquire and process. our number one priority at the chattanooga police department is helping which i am and families impacted by this crash. i will take a few questions from them. the chattanooga police department traffic division has obtained warrants for all data devices contained on the bus. our investigative team is reviewing the video for the bus. some of the video we have show views from front, back, and sides. we have not started speaking to children involved in the crash but we will in the future. that's a very important part of our investigation.

this aftern chattanooga police sergeant austin garrett: >> we received toxicology reports back today from the tennessee bureau of investigation that shows no trace of alcohol or drugs in the driver's system. >> reporter: today, the n.t.s.b. said it was looking into why walker was not driving on a designated bus route. he is being held on vehicular manslaughter charges while investigators review video and black box recordings from the bus and look into other possible investigators are also looking into claims some parents had complained about walker's driving in the past. while he has no previous criminal history, records show he was in a minor accident while driving a school bus two months ago. walker was hired by a private contractor, durham school services. c.e.o. david a. duke released this video statement today. >> my responsibility now is to look for answers, answers about why this tragedy occurred, and answers for how we can make sure that this never, ever happens again. >> reporter: the crash has left this community deep in mourning. lafrederick thirkill's nine-year-old cousin

chattanooga police sergeant austin garrett. >> we received toxicology reports back today from the tennessee bureau of investigation that shows no trace of alcohol or drugs in the driver's system. not driving on a designated bus route. he is being held on vehicular manslaughter charges while investigators review video and black box recordings from the bus and look into other possible factors like excessive speed. investigators are also looking into claims some parents had complained about walker's driving in the past. while he has no previous criminal history, records show he was in a minor accident while driving a school bus two months ago. walker was hired by a private contractor, durham school services. ceo david a. duke released this video statement today. >> my responsibility now is to look for answers. >> reporter: the crash has left this community deep in mourning. lefrederick's 9-year-old cousin died in the crash. >> this community has lost some beautiful spirits, some beautiful angels, some students that made many people's lives brighter. >> reporter: doctors at this hospital say so

chattanooga police sergeant austin garrett: >> we received toxicology reports back today from the tennessee bureau of investigation that shows no trace of alcohol or drugs in the driver's system. >> reporter: today, the n.t.s.b. said it was looking into why walker was not driving on a designated bus route. he is being held on vehicular manslaughter charges while investigators review video and black box recordings from the factors other like excessive speed. investigators are also looking into claims some parents had complained about walker's driving in the past. while he has no previous criminal history, records show he was in a minor accident while driving a school bus two months ago. walker was hired by a private contractor, durham school services. c.e.o. david a. duke released this video statement today. >> my responsibility now is to look for answers, answers about answers for how we can make sure that this never, ever happens again. >> reporter: the crash has left this community deep in mourning. lafrederick thirkill's nine-year-old cousin died in the crash. what has this community los