(AP) — A 51-year-old registered sex offender in Omaha has been returned to prison for another child sex crime.

Online court records say Harold Shipley Jr. was sentenced on Tuesday to 30 to 40 years in prison. Records say Shipley had sexually assaulted a girl several times starting in August 2012. The records also say Shipley enticed three children into his apartment on the east side of Omaha on Feb. 26 last year and molested a 7-year-old girl.

Shipley pleaded guilty to attempted sexual assault of a child after prosecutors lowered the charge and dropped four others.

Shipley is listed on the Nebraska Sex Offender Registry. He was convicted in 1998 of sexually assaulting a child and was released from prison in 2000.