A bus from northeast Missouri’s Lewis County C-1 school district has been involved in an accident near LaGrange.

The Highway Patrol tells Missourinet the bus rolled onto its roof, pinning one child’s arm under the bus. He has been freed and he was taken to a Quincy hospital along with five other students with what the Highway Patrol called “serious” injuries.

18 other children were taken to a Hannibal hospital for treatment of minor injuries.

The cause of the crash is still under investigation.