MONROE — A convicted sex offender from Alaska has pleaded guilty to living for years in Green County while non-compliant with Wisconsin’s Sex Offender Registry.

Jonathon Akiuk O’Brien, 34, Belleville, was initially charged in January in Green County Circuit Court with a felony count of failure to provide sex offender information, but the case was moved to federal court.

Court documents for the Western District of Wisconsin indicate he “traveled in interstate commerce from Alaska to Wisconsin and thereafter knowingly failed to register as a sex offender” from 2009 to 2018, as required by the Sex Offender Registration and Notification Act.

He pleaded guilty April 22 and is scheduled for sentencing Aug. 19. 

O’Brien is convicted of sexually assaulting a 51-year-old woman with significant cognitive and adaptive-functioning abilities in Alaska in 2004. He was an employee of the assisted living facility where she lived and he was intoxicated and armed with a handgun at the time of the assault, according to federal court records.

He resided in the W4000 block of Pine Valley Road in the Town of Exeter for years, according to the Green County Sheriff’s Office. Deputies arrested him there last August in response to a request from the U.S. Marshals Service and Department of Corrections to investigate O’Brien’s location.

O’Brien had been living with at least two other people and neither knew of his prior conviction, according to court records. 

He said he purposefully avoided registering in order to “keep a low profile.”