Actor David Duchovny takes part in a panel discussion for the show "Californication" at the CBS and Showtime portion of the 2011 Winter Press Tour for the Television Critics Association in Pasadena, California, January 14, 2011.[Photo/Agencies]

Actor David Duchovny, who once admitted an addiction to sex, and his wife Tea Leoni have separated again, his spokeswoman said on Wednesday.

Duchovny and Leoni, who have been married since 1997, previously separated in 2008, the same year he sought treatment for sex addiction.

Their latest separation was confirmed by Duchovny's publicist, Flo Grace. It was unclear when they split up.

The 50 year-old Duchovny plays a sex-mad writer on Showtime cable drama "Californication," after previously starring in 1990s hit drama "The X-Files."

Leoni's film roles include "Spanglish" and "The Family Man." She has two children with Duchovny.