Kelly is currently on bail after being accused of sexually abusing four women, including three teenagers, between May 1998 and January 2010.

The latest discovery was announced by lawyer Gloria Allred at a press conference where she told journalists it was found by couple Gary and Sallie Dennis in a box of old VHS cassettes at their home.

Neither Allred nor Dennis elaborated on how the tape came to be in the couple's possession.

"Prior to learning that such a tape was in their possession, Sallie had viewed the Lifetime documentary called 'Surviving R. Kelly,'" said Allred.

"She was emotionally very disturbed by what the women in the documentary alleged had happened.

"Sometime after that, Sallie and her husband discovered to their surprise that they had a VHS tape that could be helpful in learning what had happened to these young girls who had come into contact with R. Kelly."

Allred said that while she had not viewed a previous tape that had been widely reported in the media, she did not believe it was of the same act.

She said it showed "what appeared to be R. Kelly sexually abusing children" but declined to go into further detail.

But she urged others who possess such tapes but may be reluctant to admit that they have them to come forward to her or to law enforcement.

Gary Dennis said he had made the discovery while going through old sports tapes and trying to decide which ones to keep and which to throw out.

Multiple women have come forward since the airing of the six-part documentary in January to say the 52-year-old singer had sexual relations with girls under the age of 16 and kept sex slaves.

eNCA