A 51-year-old southeast Nebraska man has been sentenced to 18 months in federal prison for failing to register as a sex offender.

The U.S. Attorney’s Office for Nebraska says Roger Price was sentenced in Omaha’s federal court on Friday.

Price was previously convicted in Delaware of an offence that required him to register as a sex offender for life.

In October 2012, the U.S. Marshals Service learned that Price had been living in Rulo, Neb., for at least two months and had not registered as a sex offender with the Nebraska State Patrol.

After Price’s release from prison, he will undergo 10 years of supervision.