The San Marcos Police Department is currently investigating a possible attack at San Marcos High School. SMPD reports that it received a report from a single caller saying there was an active attack at San Marcos High School.

Police are on campus and are actively investigating the report. SMPD says there will be an increased police presence in the area as the investigation continues. There are some reports that the call was a prank while other sources say parents at the school heard shots being fired.

No other details are available at this time.