Veteran Hollywood publicist Stan Rosenfield, who represented Charlie Sheen through the actor's rehab attempts and breakup with his employers on the hit sitcom "Two and a Half Men," abruptly resigned on Monday.

"I have worked with Charlie Sheen for a long time and I care about him very much," Rosenfield wrote in a brief statement. "However, at this time, I'm unable to work effectively as his publicist and have respectfully resigned." In a follow-up e-mail, Rosenfield said he had represented Sheen for at least seven years.

The move came on the same day that Sheen turned up in another round of interviews on ABC, NBC, TMZ and elsewhere, attacking everyone from CBS to his father, former "The West Wing" star Martin Sheen. Since CBS and Warner Bros. decided last week to halt production on "Two and a Half Men" after Sheen attacked his boss, Chuck Lorre, the actor has gone on a manic round of media interviews. It is unclear what role, if any, Rosenfield played in setting up those interviews.

But the public relations man was still working on the Sheen account Monday morning, when he dispelled an e-mail hoax that said Sheen had retired from acting.

-- Scott Collins

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Photo: Charlie Sheen in 2009. Credit: Chris Pizzello / Associated Press