The incident began at around 10:45 a.m. when someone reported hearing a gunshot in the 400 block of Grant Street near Oceanside High School. Police contacted school officials, who locked down the school.
When investigators arrived at the scene, witnesses told them that a car full of young men got into some kind of argument with a pedestrian, school officials told FOX 5 News. At some point, the pedestrian threw a heavy object like a rock at the car and shattered the windshield, police told school officials. The car drove off down Grant Street and crashed about a block away.
The men in the car ran off.
The lockdown at the high school was lifted at about 11:30 a.m.
Police have not been able to confirm that a gun was fired. There were no reports of injuries.