ABC7 cameras saw two officers escorting another officer and loading him into an ambulance.

Police closed portions of DuSable Lake Shore Drive for hours to try to limit more people from accessing the beach.

Authorities took New Chicago Police Chief Earl Mayo into custody in Ohio's Clark County on Friday. Charges against Mayo were filed in Lake County, Indiana on Sunday. He is charged with official misconduct, obstruction of justice, theft, and unlawful possession of an anabolic steroid.

At least 19 people have been shot in gun violence across Chicago so far this Memorial Day weekend, police said.

The chief of police in New Chicago, Indiana, stood accused Sunday of selling a pawn shop a gun that was being held as evidence and then trying to have it bought back, among other allegations.

In charges filed Sunday, New Chicago Police Chief Earl D. Mayo is accused of stealing guns confiscated in town police investigations and selling them to a Hobart pawn shop as well as possessing anabolic steroids.

Maurice Reddick, of Chicago, faces several felony charges including attempted first degree murder, aggravated battery to a peace officer and possession of a firearm as a repeat felon, Chicago police said.