Actor Robin Williams, star of the new film "Old Dogs", arrives at the film's premiere in Hollywood, California in this November 9, 2009 file photo.[Photo/Agencies]

Actor-comedian Robin Williams was found dead on Monday at his home in Northern California from an apparent suicide, Marin County Sheriff's Office said. He was 63.

The sheriff's coroner's division said it suspects the death was a suicide due to asphyxia, but the cause of death is still under investigation.