'Suspicious' Device Report Prompts Shelter-In-Place At Alameda High School: Police

ALAMEDA, CA — A "threatening" phone call to administrators at Alameda High School prompted a shelter-in-place response Monday morning, according to authorities.

Police say campus administrators received a "threatening phone call" at around 10 a..m. about a "suspicious" device in the campus parking lot.

Officers responded to the high school and began searching it to establish whether the caller had made a credible report, according to the Alameda Police Department. Students and staff, meanwhile, were told to shelter in place.

No suspicious device was ever found, and officers deemed the report was not credible. The shelter-in-place was lifted at around noon, police said.

"The safety of students and staff remains our highest priority, and all threats of this nature are taken extremely seriously," the department said in a statement on social media. "We are aware that similar messages were reported at schools across the nation today and last week."

It's unclear who called the officers or whether they have able to identify a suspect. Police say the phone call school officials received appeared to have been pre-recorded.

The case been referred to the department's investigation unit for a follow-up, police said.