Robin Williams died on Monday at the age of 63. His death was likely a suicide.

“He has been battling severe depression of late,” Williams’ media representative Mara Buxbaum told CNN. “This is a tragic and sudden loss. The family respectfully asks for their privacy as they grieve during this very difficult time.”

According to a statement from the Marin County, California, Sheriff’s office, coroner investigators suspect “the death to be a suicide due to asphyxia.”

“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,” Robin Williams’ wife Susan Schneider said. “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.”

It wasn’t so long ago that Williams was in a rehab facility, dealing with depression and some of the issues that could have caused a relapse in his drug and alcohol recovery.

Fellow comedian and actor Steve Martin tweeted his shock at the passing of Robin Williams.

I could not be more stunned by the loss of Robin Williams, mensch, great talent, acting partner, genuine soul.

— Steve Martin (@SteveMartinToGo) August 11, 2014

Ellen DeGeneres weighed in on the tragedy.

I can’t believe the news about Robin Williams. He gave so much to so many people. I’m heartbroken.

— Ellen DeGeneres (@TheEllenShow) August 11, 2014

Former CNN host Larry King said he would he remember Williams as “a genuine caring guy. Not just a funny man, but a guy who cared about people.”

Happy Days star Henry Winkler said it was “unimaginable that this is the reality today, that this incredible human being, incredible, delicate, funny, dramatic human being is gone.”

Robin Williams was like no other ..To watch him create on the spot was a privilege to behold.. Robin you are an angel now !!! REST IN PEACE

— Henry Winkler (@hwinkler4real) August 11, 2014

Many other celebrities including Ben Stiller, Conan O’Brien, Wanda Sykes, Morgan Fairchild, Dylan McDermott, and more tweeted their sorrow over the loss of Robin Williams.

A tweet cannot begin to describe the hugeness of Robin Williams heart and soul and talent. This is so sad. #RobinWilliams

— Ben Stiller (@RedHourBen) August 12, 2014

Absolutely stunned to hear the news about Robin Williams. It's unimaginable to me that we've lost such a genuinely funny and sweet man.

— Conan O'Brien (@ConanOBrien) August 12, 2014

So sad. RIP Robin Williams.

— Official Wanda Sykes (@iamwandasykes) August 12, 2014

How can Robin Williams be gone? 1 of the kindest men & biggest talents ever! Working on Mork & Mindy was 1 of the highlights of my life!

— Morgan Fairchild (@morgfair) August 12, 2014

Rest in peace Robin Williams… The few times I spoke with him he was incredibly kind. You will be missed.

— Dylan McDermott (@DylanMcDermott) August 12, 2014

I am named after a character from a Robin Williams TV show when my parents still lived in Africa. He meant so much, to so many, so far away.

— Mindy Kaling (@mindykaling) August 12, 2014

SO SAD ABOUT THE DEATH OF ROBIN WILLIAMS BREAKS MY HEART! I WAS LUCKY TO WORK WITH HIM IN PATCH ADAMS ! REST IN PEACE SWEET MAN!❤️

— Dot-Marie Jones (@dotmariejones) August 12, 2014

Robin Williams’ big start came on TV when he starred opposite actress Pam Dawber in Mork & Mindy. The two recently reunited during an episode of Williams’ most recent TV show, The Crazy Ones. His film credits are numerous and include Dead Poets Society, What Dreams May Come, Mrs. Doubtfire, Patch Adams, Insomnia, Bicentennial Man, Goodwill Hunting, and Awakenings–to name just a few.

Hollywood has indeed lost a legend, but more importantly Robin Williams’ family has lost a husband and father. May they be the recipient of many prayers as well as the privacy they have asked for in order to grieve this tragedy that has befallen them.

Image via Twitter