LONDON, Ky. (AP) — A former supervisory deputy jailer in eastern Kentucky has been sentenced to nine years in federal prison for an unprovoked assault of a detainee.

The U.S. attorney's office says 32-year-old Kevin Asher was sentenced last week. He was convicted in April on charges of deprivation of civil rights under color of law and obstruction of justice.

Asher took part in an attack on a 55-year-old inmate in November 2012 at the Kentucky River Regional Jail in Hazard.

Trial testimony showed Asher and another jailer kicked the inmate while he was on the floor and hit the inmate while he was immobilized in a chair.

Prosecutors said Asher obstructed justice by completing a report claiming the inmate slipped and fell and that no physical force was used.

Asher plans to appeal.