At Least 6 Dead, 30 Wounded In Shooting At Chicago-Area July 4 Parade

A shooting occurred at a 4th of July parade in Highland Park, Chicago, resulting in 6 deaths and 24 injuries. The suspect, described as an 18-20 year old white male, is still at large. Authorities are urging the public to stay indoors and report any information. Multiple law enforcement agencies are involved in the search, and a rifle has been recovered at the scene.

What actions were authorities urging the public to take during the incident?

What evidence did the police recover at the scene of the shooting?