LONDON — The sexual abuse scandal surrounding the late television host Jimmy Savile widened Sunday after the British police arrested a former pop star in connection with the case.

Metropolitan Police arrested Paul Gadd, better known as Gary Glitter from the 1970s heyday of glam rock, who is a convicted pedophile. Mr. Gadd’s arrest followed accusations that he abused a teenage girl on the premises of the BBC. He was released on bail late Sunday after he was questioned in a London police station.

Since the British television station ITV broadcast a documentary about Mr. Savile earlier this month, some 300 people have come forward claiming that they were abused by the outlandish television star. They described a depraved environment in Mr. Savile’s dressing room at the BBC studios where teenage girls were molested by Mr. Savile and others including Mr. Gadd.

The case has shocked the nation and shone an intense spotlight on the BBC. Nagging questions remain there about why an investigation into Mr. Savile by the “Newsnight” program was abruptly canceled last December, and how much its executives knew about serious allegations that one of its stars had engaged in widespread sexual molestation in the 1970s and 1980s.