Variety says:

Veteran film and television comedic actor Robin Williams was found dead on Monday. He was 63.

The cause of death is believed to be suicide via asphyxiation, according to the coroner’s office in Tiburon, Calif. He was found in his home.

His publicist said the actor had been battling depression of late.

This is terrible news. If you're dealing with suicidal thoughts, you don't have to suffer alone. People want to help you. Please reach out to someone. The Crisis Clinic and the National Suicide Prevention Hotline (1-800-273-8255) are always available to help you.