A 10-year-old girl riding a bike was seriously injured on Monday after she was hit by a school bus in Oakville, Halton Regional Police say.

The girl, a student at Sunningdale Public School in Oakville, was on the sidewalk when she was hit by the bus shortly before 9 a.m.

Staff Sgt. Ray Bruce, spokesperson for Halton Regional Police, said the bus was empty when it struck the girl. The vehicle was turning left onto northbound Sixth Line from a plaza driveway, south of Upper Middle Road East, while the girl was on the west side of the roadway.

"According to early indications, she was on the sidewalk," Bruce said.

Police said the girl was taken to McMaster Hospital in serious condition. Her family and school have been notified, Bruce said.

In a statement to CBC News Monday, Sunningdale Public School spokesperson Marnie Denton said the school is hopeful that the girl makes a full recovery.

"And we are grateful to the parents, staff and neighbours who assisted at the scene before the ambulance and police arrived."

A collision reconstruction unit was on the scene Monday but Bruce said it was too soon to say if charges are pending against the driver.

Sixth Line, between Elm Road and Upper Middle Road East, was closed in both directions as police investigate.