BOSTON -- Rape charges against a carnival worker who was accused of assaulting two teen girls will be dropped, the attorney for the man said Thursday.

Marshfield fair worker Jeffrey D. Witham of Oxford, Maine, was accused of raping the girls, ages 13 and 14, at one of the girl's homes.

The charges of forcible rape, indecent assault and battery on a person 14 years old or over, kidnapping and assault and battery will be dropped against Witham, the district attorney said Thursday, saying there was insufficient evidence to proceed on those charges.

Witham pleaded not guilty to those charges on Monday and was order held on $150,000 bail.

The girls told police that they had met Witham at the fair and he went to one of their homes on Sunday. There, the girls claimed, he raped them. The girls said they tried to run from the house, but he chased them and dragged one of them into the woods, police said. One of the girls then called her father, who called police.

The Plymouth County District Attorney's Office said both girls changed their stories when they were interviewed again by police.

Witham will return to court on Friday.