Police are expected to announce charges against the suspected gunman who opened fire at a Fourth of July parade in Highland Park, Illinois on Monday.

Police said the gunman who killed six people and injured dozens of others at a Chicago-area Fourth of July parade fired more than 70 rounds with a high-powered rifle from the roof of a nearby business and then escaped by blending into the crowd wearing women’s clothing.

The fear and worry in the northern Chicago suburbs start to fade as police found a person of interest in the deadly Fourth of July parade shooting. Within hours, police identified 22-year-old Robert Crimo III as a person of interest.

On Monday morning around 10 a.m., a fourth of July parade was interrupted by gunshots.