A student found a bullet on a school bus in Bridgewater, Massachusetts, on Wednesday morning.
The school bus driver turned in the .22 caliber bullet, and as a result of the finding, police interviewed every student that was transported on the bus.
The interviews involved students from three different schools in the Bridgewater-Raynham District, ranging from grade 4 through high school.
Investigators were able to locate the source of the bullet. No weapon was recovered, and it is believed that there is no weapon associated with the bullet.
The latest news from around the state
The matter remains under investigation.