A grand jury has indicted Akron Police Officer Adam Campbell.
Campbell is charged with felonious assault for an attack on 31-year-old Steven Crupp in downtown Cleveland on March 29.
The hotel was hosting a black-tie fundraiser for the Cleveland Police Scholarship Fund.
Crupp suffered six broken ribs, a hip fracture and an abscessed tooth.
Police are still searching for the other two suspects.
Campbell has pleaded not guilty to the charge.