The body of a young female was recovered near the site of a boat accident in the Delaware River in Philadelphia, Pennsylvania police say.

According to officials with the Philadelphia Police Department, the unidentified remains are currently being transported to the Philadelphia medical examiner’s office. The Coast Guard will not say definitively that the person was the victim of the accident until the body can be positively identified by the medical examiner.

Officer Christine O’Brien said two passengers, a 16 year-old girl and a 20 year-old man went missing in that area of the Delaware River after a tour boat collided with a barge Wednesday.

Rescuers saved 35 people were on the tour boat at the time of the crash. Information on the nature or extent of their injuries was not immediately available.