TMZ: Charlie Sheen to reveal he is HIV positive

Charlie Sheen will reveal to the world that he is HIV positive, according to TMZ.

Sheen is scheduled to make a "revealing personal announcement" on Tuesday during a sit down interview with Matt Lauer on the "Today" show, sources tell TMZ.

A tabloid report came out Monday claiming Sheen's been keeping the diagnosis secret for several years.  TMZ reports that the secret unraveled when some former partners threatened him with lawsuits