Charlie Sheen believed to be addressing rumours he is HIV positive

Charlie Sheen will be making a "revealing personal announcement" today.

It is believed the actor will be talking about the speculation that he is HIV positive.

Sheen - who has a daughter, Cassandra, 30, with ex-girlfriend Paula Profit, daughters Sam, 11, and Lola, 10, with ex-wife Denise Richards, and twins Bob and Max, six, with former spouse Brooke Mueller - will sit down for an interview with 'Today' host Matt Lauer.

In light of the rumours, his ex-girlfriend Bree Olson took to Twitter to Monday to reveal that she was getting tested for the disease.

https://twitter.com/BreeOlson/status/666350407308963840?ref_src=twsrc%5Etfw