A Palm Beach County Sheriff's deputy has been fired for slapping a teenage inmate in handcuffs and then lying about it to investigators.

Deputy Gregoire Morency had worked at the sheriff's office since November 2007. According to investigators, Morency slapped the inmate in the face while transporting him in the county jail.

Sheriff's investigators say Morency lied about telling his sergeant about his use of force. Officials say he was also neglectful of his duties and used excessive force and profanity.

Another deputy was suspended for five days because he witnessed the incident but did not report the battery to supervisors or medical staff.

The 17-year-old is now serving five years in another facility on burglary and robbery charges.