Transcript for 6 Students Remain in ICU After Chattanooga School Bus Crash

The bus filled with more than thirty elementary school students ran off the road and slanted to trees. But let Everett occupied with children. Pictures are the wreckage show the yellow bus on its side wrapped around a tree. Crash. And went outside to stop us. Over. A pass across street. Be. As emergency crews struggled to free the children from the mangled bus worried parents waited to hear what happened to their kids. Craig harris' daughter a step son and a niece were on the bus they're okay. Out lost. I had to sit down and really just getting my composure. Comma white. The friend that numbers that while also affected by this. And it's us. It was just this is someone that won't face a game. Five children died at the scene one boy and four girls three of them fourth graders several children are still in the hospital some in serious condition. Residents stood in long lines to donate blood Chattanooga police say they're looking at the speed of the bus as a factor in the crash they've charged the bus driver jumped that he walker with vehicular homicide and reckless driving. We've received a search warrant an excuse for corporate blood. The investigation as a proceeds will let us know if there is any. Outside. Influences. On his ability to drive a car because vehicle. We don't know at this time. Authorities will review black box data and video from the bus to figure out exactly what happened. Jim Ryan ABC news Chattanooga.

This transcript has been automatically generated and may not be 100% accurate.