Sheriff: Hamilton County deputy charged with assault for using excessive force A Hamilton County Sheriff's Deputy has been charged with assault after using excessive force on a prisoner on April 19, according to a press release from the Hamilton County Sheriff's Office. Posted at 12:03 PM, May 03, 2021 and last updated 2021-05-03 17:55:25-04 CINCINNATI â A Hamilton County deputy has been charged with assault after using excessive force on a prisoner on April 19, according to a press release from the Hamilton County Sheriff's Office. Deputy Rick Johnson, 31, has been charged with one count of misdemeanor assault on Monday; He was released after being charged.