Gunn High and Fletcher Middle schools on lock-down due to 'unconfirmed threat'

Palo Alto Online— Palo Alto police have placed the Gunn High School and Fletcher Middle School campuses under lockdown on Monday afternoon to investigate an unconfirmed threat toward the high school, police said.

ABC7 San Francisco—Henry M Gunn High School: Palo Alto campus issues shelter in place due to unconfirmed threat, police say. Gunn High School in Palo Alto is in a shelter-in-place Monday afternoon because of what police are calling an unconfirmed threat towards the school.

CBS News—Severna Park High School, Middle School, on lockdown due to threat of possible violence. BALTIMORE -- Severna Park High School and Severna Park Middle School were placed under lockdown Tuesday morning due to a "threat of possible violence," Anne Arundel County Police said.Police say everyone inside the schools are safe. There is no evidence of weapons inside the school or on school property, according to police.A heavy police presence is in the area as officers investigate the reported threat.WJZ will provide more updates to this story as they become available.

10News—Police: Carlsbad High School locked down due to investigation of 'unsubstantiated threat'. A precautionary lockdown was initiated at Carlsbad High School Thursday morning due to what police called an “unsubstantiated threat” at the campus.