Investigators in California said Tuesday that Oscar-winning actor Robin Williams was found dead in his bedroom, fully clothed, slightly suspended in a seated position with a belt around his neck, with one end wedged between a closet door frame.
At a news conference, Lt. Keith Boyd, assistant chief deputy coroner for Marin County, said rigor mortis had already set in. Williams, 63, was found by his personal assistant, who broke in to his room when he failed to respond to knocks.
Williams' wife last saw him at about 10:30 pm the night before; she left the house the next day around 10:30 a.m. thinking he was still asleep in his room.
Boyd said some superficial cuts were found on Williams' wrist, and a pocket knife was found nearby. It was being tested to determine if residue on the knife was blood and if it was Williams' blood.
The star was found dead at his home in Tiburon on Monday, leaving Hollywood and the comedian's many fans in a state of shock.
His death is a suspected suicide, officials in Marin County say.
Williams was found unconscious and not breathing at approximately noon Monday local time, and was pronounced dead shortly after.
Williams' daughter, Zelda, 25, who is shown as a baby in the final post on the actor's Instagram account, tweeted early Tuesday morning, "I love you. I miss you. I'll try to keep looking up."
His wife, Susan Schneider, also issued a brief statement on Monday: "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."
Meanwhile, news of Williams' death continued to reverberate throughout the world. Some fans reacted Tuesday with touching tributes.
Boston fans chalked tributes and the words that Williams spoke in Good Will Hunting around the bench where he and Matt Damon filmed a scene for the movie, creating a singular memorial. Chalk footprints of where Williams sat were drawn on the bench, right above famous quotes from the movie, such as "Your move, chief."
At Los Angeles' Laugh Factory on Sunset Boulevard, the marquee read: "Robin Williams Rest In Peace Make God Laugh."
In Boulder, Colo., where Mork & Mindy was set, fans stopped by the Mork & Mindy "house" to pay tribute.
Many of Williams' co-stars and Hollywood contemporaries expressed their shock and grief, too, via statements and social media.
One constant theme: No matter his demons, Williams was a good guy : warm, sweet, generous, compassionate, humane.
Stage star Nathan Lane, who co-starred with Williams in the film La Cage aux Folles, said Williams once made him laugh so hard he cried, and on Monday he cried again at the thought that he was gone.
"What I will always remember about Robin, perhaps even more than his comic genius, extraordinary talent and astounding intellect, was his huge heart — his tremendous kindness, generosity, and compassion as an acting partner, colleague, and fellow traveler in a difficult world," Lane said in a statement.
Secretary of State John Kerry praised Williams' "extraordinary zest."
"Robin wasn't just a huge creative genius, but a caring, involved citizen," Kerry said in a statement. "I'll always be grateful for his personal friendship and his support for the causes that we both cared about deeply."
Alan Alda, in a tribute published on TIME.com, called Williams a "Niagra of wit," adding that his death made him want to do something.
"I hope it makes us all want to do something," Alda wrote."While the whole country, and much of the world, feels this moment of sadness at his death, can we turn the loss of this artist we loved so much into something that pushes back against the ravages of despair?"
"I feel stunned and so sad about Robin," Williams' Mrs. Doubtfire co-star Sally Field told Entertainment Tonight in a statement. "I'm sad for the world of comedy. And so very sad for his family. And I'm sad for Robin. He always lit up when he was able to make people laugh, and he made them laugh his whole life long ... tirelessly. He was one of a kind. There will not be another. Please God, let him now rest in peace."
On the Today show Tuesday morning, Inside the Actors Studio host James Lipton called Williams a "genius."
"His gift ... was genius. Geniuses can do things we have to learn to do. ... You can teach craft, you can teach technique. You can't teach genius. He had genius."
Steve Martin tweeted, "I could not be more stunned by the loss of Robin Williams, mensch, great talent, acting partner, genuine soul."
Sarah Michelle Gellar, who starred with Williams on CBS' The Crazy Ones, remembers her co-star as a friend who became family.
"My life is a better place because I knew Robin Williams," she told People magazine. "To my children he was Uncle Robin, to everyone he worked with, he was the best boss anyone had ever known, and to me he was not just an inspiration but he was the father I had always dreamed of having. There are not enough adjectives to describe the light he was, to anyone that ever had the pleasure to meet him. I will miss him every day, but I know the memory of him will live on. And to his family, I thank them for letting us know him and seeing the joy they brought him. Us crazy ones love you."