Center Township Police are asking for the public’s help in finding the person who called in a bomb threat against  Center Grange Primary School. Center Township Police Chief Barry Kramer tells WBVP-WMBA News that during the open house at Center Grange Primary School last Thursday night, a man called the Beaver County   9-1-1 Center, claiming there were bombs inside the school. Police evacuated and searched the building but nothing was found. Since that time, police have released the audio from the 9-1-1 phone call that was made that evening. So far, no arrests have been made.