- Thursday March 24th, 2016 :: 03:50 p.m. PDT
Walnut High School and Mt. San Antonio College - Bomb Threat 
****UPDATE**** Mt. Sac College traffic is now back to normal, classes will resume at 4:30pm today ****
Walnut High School was placed on lockdown and Mt. San Antonio College evacuated today after a note claiming a bomb will be set off was found at the high school.
Deputies and dogs searched Walnut High at 400 N. Pierre Road but did not find a bomb.
Deputies gave the all clear at the Walnut High School around 12:40 p.m. Students were let out at 1:20 p.m. The search is still ongoing at Mt. San Antonio Collage at 1100 N. Grand Ave.
Traffic in the area of Mt. SAC is extremely congested due to the evacuation. Please avoid the area.
Address/Location
LASD - Walnut/Diamond Bar Station, Los Angeles County Sheriff
21695 Valley Blvd
Walnut, CA 91789
Contact
Emergency: 9-1-1
Non-emergencies: 909-595-2264