What we know about the person of interest in the Highland Park parade shooting

Hours after a gunman opened fire on a suburban Fourth of July parade in Highland Park, Illinois, killing six people and wounding two dozen, police detained a man they identified as a person of interest, Robert Crimo III. He has not been officially charged in the attack.

Investigators say the gunman shot at parade-goers from a rooftop at around 10:15 a.m. as the community celebrated Independence Day. A "high-powered rifle" was recovered at the scene, police said. The suspect was initially described as a young White man with long dark hair.

A few hours later, authorities publicly identified Crimo as the man being sought and released a photo. Police have not said what exactly led them to identify Crimo as a person of interest in the shooting.