Long Beach police arrested a 16-year-old boy from Lakewood Wednesday on suspicion of threatening violence at Millikan High School, authorities said.

Officers responded to the school at 2:15 p.m. and interviewed witnesses regarding the threat, Lt. James Richardson said.

Police said it was a verbal threat and told the Long Beach Press-Telegram the student threatened to “shoot up the school.”

They also told the paper that investigators later found one properly stored and locked firearm at the teen’s home, but it was inaccessible to him.

“The investigation concluded that the students’ safety was not compromised,” police spokeswoman Shaunna Dandoy said.

Long Beach Unified School District spokesman Chris Eftychiou deferred questions to the police department and added, “the campus was not in danger and remains safe.”

The arrest comes just days after three 15-year-olds were taken into custody for allegedly threatening some kind of violence at Jordan High School in North Long Beach.

In that case, the threat was made on Instagram Sunday night. Hours later, one of the teenager called police and took responsibility for the post, according to authorities.

Editor’s note: This story has been updated with information on the threat.