Hulk Hogan claims a sex tape allegedly featuring him and a mystery brunette was "secretly filmed."

The legendary wrestler is furious about the recording - which is currently being offered for sale to porn companies - and has branded it an "outrageous invasion of privacy." According to TMZ.com, the footage shows the 58-year-old WWE champion - real name Terry Bollea - getting intimate with an unidentified brown-haired woman who is not thought to be his blonde wife Jennifer McDaniel or ex-wife Linda Hogan.

However, it is not know when the tape was made. "Terry Bollea is appalled at the unauthorized release of a secretly filmed video. (Hulk) neither approved of the filming nor the release of the same. It is clearly an outrageous invasion of privacy and breach of trust if it is genuine. We will take all necessary steps to enforce both civil and criminal liability," his lawyer David Houston, told TMZ.

Steve Hirch, the founder of adult company Vivid Entertainment, claims he was offered the recording for a price, although the person offering the sale has not been identified.