MOORHEAD (AP) -- Four children were taken to the hospital with injuries that were not life-threatening after the school bus they were riding in crashed with a pickup truck in northwestern Minnesota's Clay County.

Sheriff Mark Empting said the crash happened at about 7:30 a.m. Thursday in rural Clay County. Empting said the preliminary investigation shows the driver of the pickup truck may have failed to yield, but the investigation is ongoing.

The school bus was equipped with a camera, which will be used in the investigation.

The bus was carrying students from the Ada-Borup School District.