NEW YORK (AP) -- NBC says actor Charlie Sheen is set to "make a revealing personal announcement" on NBC's "Today" show on Tuesday.
The network said Monday it would not comment on the specifics of the announcement, which it said will occur during an interview with "Today" anchor Matt Lauer.
Drug and alcohol use have marred Sheen's personal and professional life in recent years: He was kicked off CBS' "Two and a Half Men" in 2011 after an explosive meltdown that the network said included calling the show's producer a "contaminated little maggot," and for providing cocaine to others. His escapades have also included the revelation that he spent more than $50,000 as a client of "Hollywood Madam" Heidi Fleiss' prostitution ring.
The "Today" show airs at 7 a.m. EST.