HIGHLAND PARK, Ill. (AP) — Police say at least six people are dead and 24 were wounded in a shooting at a July Fourth parade in a Chicago suburb, and officers are searching for a suspect who likely fired on the festivities from a rooftop. Highland Park Police Commander Chris O’Neill urged people to shelter in place as authorities search for the suspect. Lake County Major Crime Task Force spokesman Christopher Covelli said at a news conference that the gunman apparently opened fire on parade-goers from a rooftop Monday morning using a high-powered rifle that was recovered at the scene. Covelli says police believe there was only one shooter but warn he should still be considered armed and dangerous. Police have not released any details about the victims.