WAIANAE (HawaiiNewsNow) - Marshals say they caught 43-year-old Benedict Regidor Mauai at about 9:30 p.m. Tuesday.
They say he plead guilty to abusive sexual contact of a minor in North Dakota back in 2005.
He allegedly failed to register there, and didn't register in Hawaii when he arrived in June.
Marshals found him with his three-year-old son, who he allegedly took without the permission of the child's biological mother who had full custody.
The boy will be returned to his mom.