Officials charged a Winthrop man this week with sexually assaulting one of three boys he adopted from Columbia over the summer, authorities said.
Kiyoshi Yu, 52, is charged with assault and battery on a child under 14, the Suffolk County District Attorney's Office said. A judge ordered him held on $2,500 bail. Yu is not to have contact with the children and must forfeit his passport as part of his bail agreement, authorities said.
Investigators said Yu adopted the three boys — ages 8, 9, and 13 — from Bogota last summer. One of the children said Yu repeatedly abused him in a Columbian hotel before coming to the United States, where the abuse continued, police alleged.
The charge stems from one incident where Yu forced the boy to stroke his penis, the prosecutor said.
Police began investigating Yu in August when Rhode Island officers found the boys in a car parked at a casino, where he was gambling the prosecutor said. They told the police that Yu made them sleep on the floor, would not let them shower, and made them wear the same clothes for days on end.