A Grand Rapids, Michigan, school was evacuated after three makeshift bombs were discovered.
WOOD-TV reported that three unexploded Molotov cocktails were found at CA Frost Middle High School. Grand Rapids Police said they were found inside a locker on Thursday.
About 300 students were evacuated as a bomb squad worked to clear the scene.
There were no reports of injuries, WOOD-TV reported.
More details about the incident were not revealed.