New York ? A Hofstra University freshman who had claimed she was raped by five men in a dormitory bathroom changed her story after prosecutors confronted her with the revelation that a video of the encounter may have been recorded, a prosecutor said Thursday.

The recantation on Wednesday night led to the immediate release of four men, including one student at the Long Island college, who had been arrested on rape and other charges. Police had been seeking to arrest a fifth man when the charges were dropped.

The sex did occur in a bathroom but was consensual, a prosecutor said. Authorities could decide within weeks whether to charge the 18-year-old woman for making up the story.