Police are investigating after they said a car hit a school bus head-on in Palm Bay late Thursday afternoon.

The crash happened on the 1200 block of Emerson Drive, near Lexington Street, north of Malabar Road and west of I-95.

Palm Bay police said four to six special needs children from Lockmar Elementary School were on board the bus when the crash happened.

No on on the bus was hurt, but the driver of the car, 25-year-old Christine Hill, was taken to Holmes Regional Medical Center with serious injuries.

Investigators saif Hill may have been high on drugs and could be facing criminal charges.

Witnesses told Palm Bay police the woman's car crossed over the yellow line in the road and hit the bus head-on.