A 16-year-old student was arrested in class at San Lorenzo High School on Tuesday with a loaded gun.

A fellow student spotted the suspect on campus with a gun and at about 12:45 p.m. notified school staff. Faculty called the Alameda County sheriff's office.

Deputies who work as school resource officers on campus found the boy in class and arrested him without incident. A loaded 9mm Glock handgun was found in his backpack, authorities said. The gun was reported stolen out of Santa Clara County.

According to a Tweet from the Alameda County Sheriff, "Staff and school resource officers worked together to bring this to a safe conclusion." There was no lockdown.

In a Tweet, Alameda County Sheriffs' Department used the hashtags "#SchoolSafety" and "NotHappeningAtOurSchool."

"Any time you have a gun on school campuses it's a recipe for disaster," Sgt. Ray Kelly said. "And any time you have a stolen gun in the hands of young people, the likelihood that it's going to be involved in a crime later is high. So this is a victory today and one of the most important things about today is that students came forward."


The boy was taken to the Alameda County Juvenile Justice Center. He could face separate sanctions from the school.

This is the second time in two months that deputies have responded to schools in San Lorenzo about a gun on campus. In March, there was a lockdown at Arroyo High School where a handgun was also recovered. In that case, three students were initially detained.