OMAHA, Neb. (AP) — A 20-year-old man has been given five years in federal prison for selling crack cocaine in Omaha.

Prosecutors say Larry Johnson, of Omaha, was sentenced on Monday by U.S. District Judge Laurie Smith Camp. Johnson must serve four years of supervised release after he leaves prison.

Prosecutors say Johnson was arrested after he sold crack to a witness who was cooperating with law enforcement authorities.