(WHAS11) -- Many questions remain after two toddlers died in a bus crash in Carroll County. Three children are still at Kosair Children's Hospital.
Kentucky State Troopers went back to the tragic site during their investigation.
"Anytime a fatality happens to anyone it weighs on the community but especially when it's a child, two children that were on a school bus. You just don't think of that happening," said Trooper Brad Arterburn with Kentucky State Police.
Head Start in Carroll County was closed again Wednesday as the community mourns. Two ribbons adorn the front door of the Carroll County Head Start Child Development Center. Pink for Caroline Tuttle and blue for Ryder Deitz, both only three-years-old.
At the tragic crash site, miles away, a memorial sits against a tree with balloons and stuffed animals.
"Thoughts and prayers go out to their families because I know them personally," said Marty Hearn who has a niece being treated at Kosair Children's Hospital.
Monday, a driver, bus monitor and nine children were on board when the bus flipped and neighbors say they heard a loud noise.
Kentucky State Police are trying to reconstruct exactly how a Carroll County bus driver lost control and over-corrected, somehow running into a tree.
It was one of only a few trees along Boone Road. As part of their investigation, State Police brought a Carroll County Head Start bus and evidence technicians to the scene Wednesday to help determine what happened that day.
"It was windy Monday the day of the crash. Now there were a lot of wind gusts that day. As far as other vehicles being around, that hasn't been established either. There were reports of another vehicle that could've forced the bus off the road. That hasn't been confirmed," said Trooper Arterburn.
Everyone was strapped in seat belts. The driver was not hurt. But the bus monitor and six children were rushed to the hospital. Three kids are still at Kosair.
A three-year-old boy in the surgical unit will be released Wednesday night. Another boy of the same age, in the Pediatric ICU, is in good condition. Doctors will watch a four-year-old girl who underwent surgery for a few days.
As they recover, troopers have many unanswered questions to examine.
"They have to look through bus records, if there were any mechanical issues in the past to see if there was anything in there that could have caused this. I believe they talked to the driver, talked to her last night," said Trooper Arterburn.
Visitation for Caroline Elizabeth Tuttle will be from 4 to 8 p.m. on Thurs., Nov. 1, at the Family Worship Center in Carrollton. Funeral Services will be at 2 p.m. Fri., Nov. 2, at the Family Worship Center in Carrollton with the Rev. Joe Kindoll officiating. Caroline will be buried at in the I.O.O.F. Cemetery in Carrollton.
Visitation for Ryder Deitz will be from 6 to 8 p.m. Fri., Nov. 2, at the Family Worship Center in Carrollton. Funeral Services will be on Sat., Nov. 3, at 1 p.m. at the Family Worship Center in Carrollton.