David Duchovny rose to fame playing Fox Mulder in The X Files
US actor David Duchovny has entered a rehabilitation clinic for sex addiction, his publicist has confirmed.
In a statement released through his lawyer, the X Files star said he had entered the facility "voluntarily".
He added: "I ask for respect and privacy for my wife and children as we deal with this situation as a family."
The 48-year-actor, who has been married since 1997 to actress Tea Leoni, plays sex-obsessed character Hank Moody on the hit TV series Californication.
The couple have two children together.
Cable network Showtime, which broadcasts Californication, released a statement: "All of us at Showtime wish David and his family the best during this very private time."
Duchovny rose to fame playing FBI agent Fox Mulder in The X Files series, which began in 1993.
The show spawned two big screen spin-offs. The most recent, The X Files: I Want to Believe, was released in UK cinemas in July.