LIBERTY, Neb. (AP) — Police are investigating after a Lewiston Consolidated Schools bus went off a gravel road and ended up in a creek, sending three children to the hospital.

The driver of the school bus had just started the morning route Monday when the bus went off the road and landed on its top in the creek 10 miles east of Liberty.

Superintendent Rick Kentfield said only the driver and her three grade-school age children were on the bus at the time. The children were taken to Pawnee County Hospital.

Kentfield said two of the three children were released from the hospital Monday afternoon.