(Vancouver, WA) -- Clark County Sheriff's deputies rushed to Heritage High School in Vancouver yesterday morning in response to a call about an active shooter that turned out to be false. The caller claimed to be a teacher at the school. The first deputy on the scene was the school's resource officer. Within 40 seconds, five more deputies were at the school. They quickly determined it was a prank call and there was no danger to students or staff. The investigation into who made the call continues. The Sheriff's Office says the caller had a similar accent to another call at Henrietta Lacks High School in Vancouver on September 16th.