PITTSBURGH — A woman who was accused of concealing the whereabouts of her twins, who haven’t been seen in more than 10 years, has pleaded guilty to lesser charges and will serve four years of probation.

Patricia Fowler on Monday pleaded guilty to making false unsworn statements to police in connection with the Allegheny County police investigation into the whereabouts of the twins, Ivon and Inisha Fowler.

Detectives have said they fear the twins are dead.

Patricia Fowler, 48, also pleaded guilty to theft and fraud for collecting nearly $57,000 in public assistance on behalf of the twins. She must repay that money as part of her sentence.

Fowler pleaded guilty after prosecutors on Monday dropped charges against another of her sons, Datwon Fowler. He had been accused of pretending to be Ivon Fowler in a text message to police last year.