The Murrieta Police Department Sunday warned residents not to be alarmed by a four-hour, multi-agency active shooter drill that will take place at Murrieta Mesa High School on Tuesday afternoon.
The drill will involve emergency responders from across the region, including the Riverside County Emergency Management Department, the Murrieta Police Department, Murrieta Fire and Rescue, American Medical Response and the Murrieta Valley Unified School District.
“The goal of the exercise is to test critical communication capabilities, resource coordination and expedited triage, treatment and transport during a mass casualty incident,” the Murrieta Police Department said in a news release.
The drill is scheduled to take place after school is let out, from 3 p.m. to 7 p.m. with some school staff and students staying behind to assist and act as simulated victims.
A large amount of ground and air emergency vehicles will be converging on the school during the drill and authorities warned nearby residents that there will be traffic delays around the school, specifically along Monroe Avenue.
During the drill, about 50 simulated patients will be taken by ambulance to surrounding hospitals and some mannequins with mock injuries will be flown by helicopter to Riverside University Health System – Medical Center, the Murrieta Police Department said.