The official says Gregory Manning was docked 40 days of vacation, given a five-day suspension fined $500. The official had direct knowledge of the plea but was not authorized to speak publicly and spoke to The Associated Press on condition of anonymity.
The official says Manning will receive immunity from any possible criminal prosecution into the ongoing investigation. No officers have been charged criminally.
Manning testified at least three times before the grand jury on reports of officers fixing tickets - undoing paperwork on traffic citations before they reach court as favors to officers' friends or relatives.
Manning's lawyer had no comment Thursday.