Crime & Justice

Mt. San Antonio College, Walnut High declared safe after bomb threat

Mt. San Antonio College is Walnut, California has closed its campus do an unspecified
Mt. San Antonio College is Walnut, California has closed its campus do an unspecified "threat to the campus."
Google Maps

Police have declared the campuses of Mt. San Antonio College and nearby Walnut High School safe after a bomb threat forced the closure of both schools and snarled traffic around the area Thursday morning. 

Mt. San Antonio College tweeted at 3:11 p.m. that the campus was deemed safe by authorities, and that classes would resume at 4:30 p.m.  

Mt. Sac

Officials at the college and high school were notified of the threat at 10:24 a.m. Thursday, Walnut Police Department spokesman Lt. John Saleeby said.  The report said the bomb would go off at 2:45 p.m.

That led college officials to call for an evacuation of the campus and the high school being put on lockdown. The two campuses are less than a mile apart. 

Los Angeles County Sheriff's Department deputies with bomb-sniffing dogs swept both campuses, said Deputy Guillerma Saldana. "We're just going through the precautions," Saldana said.

"In an act of caution and in light of Brussels, we decided to evacuate," said Mt. San Antonio College spokeswoman Jill Dolan.

The evacuation of the college led to traffic jams in the area. CHP Officer Edgar Figueroa  said the southbound lanes of Highway 57 were backed up, traffic on Temple Avenue was traveling at less than 5 mph in both directions, and Grand Avenue was backed up.

The Los Angeles County Sheriff's Department tweeted at 1:22 p.m. that the bomb threat had concluded and the lockdown at Walnut High had been lifted. 

LASD tweet

College officials had tweeted that students and staff should "calmly leave campus" and that classes and other services would be canceled until at least 4:30 p.m. Meanwhile, Walnut High was put on lockdown, with students, faculty and staff remaining on the campus until 1 p.m., when classes were concluded for the day.

This story has been updated.