updated 08/11/2014 AT 6:00 PM ET
•originally published 08/11/2014 AT 7:00 PM ET
The actor “passed away [Monday] morning. He had been battling severe depression of late,” his rep said in a statement. “This is a tragic and sudden loss. The family respectfully asks for their privacy as they grieve during this very difficult time.”
Williams was found in his home in Tiburon, California, after police responded to a 911 call, PEOPLE has confirmed. He was 63.
“At this time, the Sheriff’s Office Coroner Division suspects the death may be a suicide due to asphyxia, but a comprehensive investigation must be completed before a final determination is made,” Lt. Keith Boyd, the Marin County assistant chief deputy coroner, said in a statement.
The Crazy Ones star checked himself into rehab in early July after battling alcohol and drug addiction throughout his life.
“This morning, I lost my husband and my best friend, while the world lost one of its most beloved artists and beautiful human beings. I am utterly heartbroken,” his wife Susan Schneider said in a statement.
“On behalf of Robin’s family, we are asking for privacy during our time of profound grief. As he is remembered, it is our hope the focus will not be on Robin’s death, but on the countless moments of joy and laughter he gave to millions.”