AMBRIDGE — Police say they plan to charge a school bus driver with endangering a 10-year-old boy by braking suddenly so the boy would fall.

Police in Harmony Township aren't identifying the driver who was upset because the boy would not remain in his seat. Police say the bus driver told the boy "If you do it again, I'll knock you down."

Police say when the boy moved around again, the bus driver hit the brakes and knocked the boy down. Police say a surveillance video shows the boy was knocked to the floor out of camera view. Police say another student was seen flipping over a seat.