DJ Dave Lee Travis has reportedly been arrested by detectives investigating the Jimmy Savile abuse scandal.
A man in his 60s, who lives in Bedfordshire, was held at 7.45am on Thursday on suspicion of sexual offences.
Scotland Yard said the allegations against him do not directly involve Savile, and are classed under the strand of their investigation termed "others".
The reported arrest of the former Radio One star, from Leighton Buzzard, came as the Metropolitan Police revealed they are now dealing with around 450 potential victims, the majority of whom claim they fell prey to Savile. This has risen from around 300 possible victims the force said they were dealing with last month.
Officers are looking at three strands within their inquiry: claims against Savile, those against Savile and others, and those against others.
Most of the "others" allegations have been made against people associated with the entertainment industry. Ex-rocker Gary Glitter, comedian Freddie Starr and a 73-year-old man have already been arrested and bailed in connection with the investigation.
A 1977 episode of Top Of The Pops featuring Travis was due to be shown on BBC4 on Thursday night but has been pulled.
A BBC spokesman said: "In the light of today's news, we have postponed tonight's Top Of The Pops. In its place we are showing next week's edition of TOTP presented by Kid Jensen."
Last month Travis vigorously denied allegations that he groped two women while in BBC studios.
One alleged that he had put his hand up her skirt, while the other said he had "jiggled" her breasts.