Robin Williams In Alcohol Rehab

CANNES, FRANCE - MAY 25: US actor Robin Williams arrives at "Cinema Against AIDS 2006", the annual event in aid of amfAR (American Foundation for AIDS Research) at Le Moulin de Mougins during the 59th International Cannes Film Festival May 25, 2006 in Cannes, France. (Photo by Peter Kramer/Getty Images)
Getty Images/Peter Kramer
Robin Williams is seeking treatment for alcoholism, publicist Mara Buxbaum said Wednesday.

The 55-year-old comedian had been sober for 20 years, Buxbaum said.

Williams "found himself drinking again and has decided to take proactive measures to deal with this for his own well-being and the well-being of his family," she said in a statement. "He looks forward to returning to work this fall to support his upcoming film releases."

Buxbaum declined to elaborate beyond the statement.

Williams currently stars in the psychological thriller "The Night Listener," a film based on the best-selling novel by Armistead Marpin. He plays a radio talk show host who develops a telephone relationship with a young listener.

Later this year, Williams will star in "Man of the Year," and serve as the voice of an animated penguin in "Happy Feet," slated for release in November.

He won an Oscar for his supporting role in 1997's "Good Will Hunting."