John Stamos Mourns Bob Saget: "I Am in Complete and Utter Shock"

As previously and tragically reported, Bob Saget is dead at the age of 65.

The former Full House star, who was also a beloved stand-up comedian, passed away inside of his hotel room in Orlando on Sunday.

“Detectives have found no signs of foul play or drug use in this case,” the local sheriff’s office said in a statement.

“This is all the information we have for release at this time and we do not anticipate further updates."

The police added last night that the Medical Examiner’s Office "will ultimately determine cause and manner of death."

Just a few hours before his passing, Saget performed on stage in Jacksonville and he was scheduled to continue on a tour through June.

While the public waits to learn more about what transpired and why, numerous figures in Hollywood have come out and posted messages of sympathy and sorrow on social media in response to this stunning news.

This includes John Stamos, who starred for years opposite Saget on Full House and then the Netflix sequel, Fuller House.

Bob Saget on Instagram

"I am broken. I am gutted. I am in complete and utter shock. I will never ever have another friend like him. I love you so much Bobby," Stamos tweeted late Sunday.

On Full House, Saget and Stamos memorably played brothers-in-law, Danny Tanner and Jesse Katsopolis, who move in with their college best friend, Joey Gladstone (Dave Coulier), to help raise Danny's three daughters.

The kids were portrayed by Candace Cameron Bure, Jodie Sweetin and twins Mary-Kate and Ashley Olsen.

The latter pair also reacted with a statement shortly after learning about Saget's death.

John Stamos and Bob Saget

“Bob was the most loving, compassionate and generous man.

"We are deeply saddened that he is no longer with us but know that he will continue to be by our side to guide us as gracefully as he always has,” Mary-Kate and Ashley told Page Six.

"We are thinking of his daughters, wife and family and are sending our condolences."

Bob Saget and Olsens

Saget was found unresponsive in his room at the Ritz-Carlton in Orlando, the sheriff's department confirmed. He was pronounced dead at the scene.

Along with his legendary role on Full House, Saget also hosted the first eight seasons of America's Funniest Home Videos.

More recently, Saget hosted the podcast Bob Saget's Here For You, in which he spoke with comedians and actors.

His final episode was published on January 3 and featured Saget interviewing writer and actor B.J. Novak.

Bob Saget Photo

Respected for his successful career and beloved as a human being, Saget was mourned by a wide range of celebrities on Twitter and Instagram last night.

Scroll down for some examples...

Kat Dennings: "Oh god. Bob Saget!!! The loveliest man. I was his TV daughter for one season and he was always so kind and protective. So so sorry for his family."

Jon Stewart: "Bob Saget…Just the funniest and nicest…

Bob Saget Pic

Drew Carey: "Well this one hurts. I loved Bob Saget. He gave me so much encouragement when I first started out. He was a real friend to me too. Not just a mentor. I always looked up to him. He was SO damn funny and so kind. Ugh."

Candace Cameron Bure: "I don't know what to say. I have no words. Bob was one of the best humans beings I've ever known in my life. I loved him so much."

Adam Sandler: "Great man. Funny as hell. Such a nice person. Love to Bob and his whole family."

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Dave Coulier: "My heart is broken. I love you, Bob. Your forever brother, Dave."

Guy Fieri: "Lost a great guy and a friend. RIP Bob Saget."

Katie Couric: "He was such a great guy.. RIP."

Kathy Griffin: "You couldn't find a nicer or sharper wit than Bob Saget. Shocked and devastated."

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Whoopi Goldberg: "Sail on my friend Bob Saget With your huge heart and abject lunacy,my condolences to his daughters & other family."

Tom Bergeron: "Just heard the news. Devastated. I'm going to miss you, my friend.

Patton Oswalt: "Bob was at my house in October interviewing me for a documentary. He was sharp and dark and funny as always and we were gonna catch up over coffee when he was done editing and now I'm crying F--K #RIPBobSaget."

Marc Maron: "Oh no. RIP Bob Saget. Truly one of the nicest guys and so funny. Very sad."

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Joel McHale: "I'm so shocked at @bobsaget's passing. One of the most kind & thoughtful people I've ever come across & he just happened to be one of the funniest on the planet. I will miss you so much Bob. Love you dear friend. I'm so sorry @kellyrizzo. And so sorry to the rest of the family."

Billy Crystal: "I'm shocked and saddened to learn that Bob Saget is gone. A great friend and one of the funniest and sweetest people I have ever known. My love to his beautiful family."

Andy Cohen: "He had the biggest heart and wore it on his sleeve. He was so generous with his feelings. A mensch. #BobSaget.

Bob Saget is survived by his wife andd and three daughters. May he rest in peace.