Caption: Billy Guzman, Sheriff’s security at Valley College is assigned to shut down the Pierce College campus entrance at Winnetka Avenue and Victory Boulevard. Photo: Kristen Aslanian

Update: 3:37 p.m.

Caption: One of the guns along with ammunition found during the search in Castanon’s residence. Photo: LASD-SIB

Caption: Several rounds of ammunition that was found during the search. Photo: LASD-SIB

LA County Sheriff’s department officials identify the suspect arrested on suspicion of making threats that prompted the evacuation of the Pierce campus this morning: Sergio Castanon Jr., 26, of Northridge, a former Pierce College student.’s L.J. Williamson reports.

Update: 10:35 a.m.

In this podcast, reporter L.J. Williamson finds out the details of Pierce’s second lockdown or evacuation of the semester as of 10:37 a.m., Oct. 16, 2014.

The Roundup, Pierce College’s newspaper, also has updates on the story.