The NBC Bay Area helicopter showed a dark campus around 5:30 p.m. There were no students seen walking around, only police.
Lotus Curry told NCB Bay Area that this the second day in a row where the school has been placed on lockdown. Just on Monday there were reports of a person with a knife that sparked another lockdown.
He said he was with about 30 other students and staff behind a locked door. They are all waiting for the all clear.
So far, police have not located the gunman, campus police said.