San Marcos High School given the 'all-clear' by police after anonymous threat

SAN MARCOS, Texas - San Marcos High School was on a secure lockdown due to a threat the school received on Tuesday. 

According to the high school, on Tuesday, Sept. 24, at 3:58 p.m., the campus was in a secure lockdown, meaning no one was allowed in or out. The reason for the lockdown was due to a threat the school received from an anonymous phone call. 

The City of San Marcos said police responded to a call around 3:32 p.m. in reference to an active shooter on campus. A caller said they saw someone with a gun in the hallway.

San Marcos police investigated, and gave the campus the all-clear about an hour later.

Police said there was no active threat on campus.