High school lockdown caused by 'student bus driver did not recognize,' principal says

GLENDALE, Ariz. — A lockdown at Mountain Ridge High School in Glendale was lifted around 9:30 a.m., Tuesday morning. School officials said that the lockdown was caused by reports of an unknown person on campus, who later turned out to be a student.

Administrators worked with Glendale police to sweep the campus and investigate. Police confirmed that there wasn't a gun on the campus, and the lockdown wasn't being treated as a police situation.

Officials learned that the unknown person was a student of the high school that "the bus driver did not recognize," Principal David Vines said in a statement.

A notification on the school's website said that students and staff are safe and asked that people don't come to campus. The school website displayed the following message during the lockdown:

"We will always put the safety of our students and staff first and we thank you for your support towards creating a safe, orderly, and caring environment at Mountain Ridge High School," Vines said.

The school is located near 67th Avenue and Deer Valley Road.

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