Three students were arrested Tuesday in separate gun-related incidents at Berkeley High School.
No one was injured when a gun was fired inside a school bathroom, and two students were arrested a short time later on campus, police said.
The suspects were positively identified by two students who witnessed the gun go off in the bathroom, and the weapon was found about two hours later wrapped in a jacket in the 2200 block of Haste Street, said Berkeley Police spokeswoman Sgt. Mary Kusmiss.
Kusmiss said the students most likely fled the campus after the gun went off, dumped the gun and then came back to school where they were arrested. There also was a 15-minute delay in reporting the incident to police.
Kusmiss said a Berkeley High School maintenance officer who heard the shot and saw the students run away first called his supervisor instead of calling police. The supervisor also did not call police but instead called someone at Berkeley High School, who then called police, Kusmiss said.
Kusmiss said police believe at least one shot was fired, and it went through the wall of the bathroom, which is in a portable building near Milvia and Durant streets.
"It's very serious because if an employee or any students were standing outside, it could have seriously injured or killed them," Kusmiss said.
The two students who witnessed the gun go off in the bathroom were not involved in the incident, Kusmiss said.
The school was placed in lockdown for a few minutes after the shots were fired, said district spokesman Mark Coplan.
Later a third student carrying a gun was arrested following an anonymous tip, police said. That student was arrested without incident after school security officers removed him from class, Kusmiss said.
Arrests of students bringing guns to school have become a monthly occurrence since the start of the year.
Berkeley High students were arrested in January and February and earlier this month a Berkeley Technical High School student was arrested with a loaded semi-automatic handgun in a classroom.
Doug Oakley covers Berkeley. Contact him at 510-843-1408. Follow him at Twitter.com/douglasoakley.