Police say a Denver-area high school student whose class project included a replica AK-47 was carrying the display to his mom in the parking lot, roughly around the time another student and teacher saw someone outside with what appeared to be a rifle.
The report Friday of a possible gunman near campus drew armed officers and worried parents to Thornton High School, as several students hunkered down in classrooms and closets. Other students left the school in single file, holding hands and led by police to buses taking them away from campus. An officer was posted in each bus.
Police say no gunman was found, and everyone is safe.
Thornton police said Friday evening that the investigation remains active, but no one has been arrested.