Authorities are giving more insight into the efforts made to rescue Matthew Perry.

Two days after the Friends star died in an apparent drowning at his home in Los Angeles, the city's fire department has shared details surrounding the circumstances, confirming they found an "adult male unconscious in a stand-alone hot tub" after responding to an emergency call.

"A bystander had brought the man's head above the water and gotten him to the edge, then firefighters removed him from the water upon their arrival," Captain Erik Scott from the LAFD told E! News in an Oct. 30 statement. "A rapid medical assessment, sadly, revealed the man was deceased prior to first responder arrival."

Scott noted that Perry's death is currently under investigation by LAPD and the LA County Medical Examiner.

"We mourn with families and friends," he concluded, "who lose a loved one unexpectedly." 

Perry's rep and a law enforcement source previously confirmed to NBC News that the Emmy nominee died at the age of 54 on Oct. 28.

According to a report released by the Los Angeles County Medical Examiner, per the outlet, Perry's cause of death has been deferred, and initial autopsy results are inconclusive, pending a toxicology report. Details on his cause of death are expected to be disclosed within the next few weeks.

After his sudden passing, loved ones and fellow stars paid tribute to the Friends, Lovers, and the Big Terrible Thing author, including his Friends costars Jennifer Aniston, Courteney Cox, Lisa Kudrow, Matt LeBlanc and David Schwimmer.

"We are all so utterly devastated by the loss of Matthew," the cast said in a joint statement to E! News Oct. 30. "We were more than just cast mates. We are a family. There is so much to say, but right now we're going to take a moment to grieve and process this unfathomable loss."

Perry's costars noted that in time they open up more about the devastating loss.

"For now, our thoughts and our love are with Matty's family," they continued, "his friends, and everyone who loved him around the world." 

Keep reading for more heartfelt tributes from celebs dedicated to the actor.

"We are all so utterly devastated by the loss of Matthew. We were more than just cast mates. We are a family. There is so much to say, but right now we're going to take a moment to grieve and process this unfathomable loss. In time we will say more, as and when we are able. For now, our thoughts and our love are with Matty's family, his friends, and everyone who loved him around the world."

"I met Matthew Perry in 1993 at the Williamstown Theater Festival in Massachusetts," Gwyneth Paltrow wrote in a tribute on Instagram. "We were both there for most of the summer doing plays. He was so funny and so sweet and so much fun to be with. We drove out to swim in creeks, had beers in the local college bar, kissed in a field of long grass. It was a magical summer. He had shot the pilot of Friends but it had not aired yet. He was nervous, hoping his big break was just around the corner. It was. We stayed friends for a while until we drifted apart, but I was always happy to see him when I did. I am super sad today, as so many of us are. I hope Matthew is at peace at long last. I really do."

During Adele's Oct. 28 concert in Las Vegas, which took place just hours after Matthew's death was confirmed, she paused her show to honor him, recalling the impact he had on her childhood. "One of my friends, Andrew, when I was 12 did the best Chandler impression," she told the crowd. "And he would do it all the time to make us laugh. And if anyone was having a bad day or feeling low, he would just pretend to be Chandler. And I'll remember that character for the rest of my life." 

Maggie Wheeler, who played one of Perry's most memorable love interests on Friends, wrote on Instagram, "What a loss.The world will miss you Matthew Perry . The joy you brought to so many in your too short lifetime will live on. I feel so very blessed by every creative moment we shared." 

After his passing, Perry's Fools Rush In costar Salma Hayek noted it took a "couple of days to process this profound sadness."

"There is a special bond that happens when you share dreams with someone, and together you work towards them," she wrote in an Oct. 30 Instagram post. "I was very moved last year when Matthew shared on his Instagram stories how much he loved 'Fools Rush In,' and how he thought that that film we did together was probably his best movie."

"Throughout the years, he and I found ourselves reminiscing about that meaningful time in our lives with a deep sense of nostalgia and gratitude," she continued. "My friend, you are gone much too soon, but I will continue to cherish your silliness, your perseverance, and your lovely heart. Farewell, sweet Matthew, we will never forget you."

Alongside her final texts with Matthew days before his death, his former costar Ione Skye wrote on Instagram, "My last exchange a week ago. I’m very very sad. Loved this guy."

Kathleen Turner, who played Chandler Bing's parent on Friends, told People, "He had a good sense of humor and a good heart. He liked other people, which, to me, is terribly important, especially for an actor." 

The Beverly Hills, 90210 star remembered her time spent with the Emmy nominee.

"Matt always had THAT sense of humor," she wrote on Instagram. "Matt and I had a date and it was on Valentine's Day. He wanted to get a reservation at a restaurant in Malibu but couldn't so my dad got the reservation for him. We went and he talked about my dads Irish persuasiveness the majority of the night. Our friendship spanned a long time. A lifetime really. I know many are hurting, especially our little gang. He will be missed by many and definitely by us. Yes. I could be more poetic or say things better but right now, shock and sadness prevail."

Morgan Fairchild, who played Chandler Bing's mother on Friends, paid tribute to her onscreen son, captioning a social media post, "I'm heartbroken about the untimely death of my ‘son'. The loss of such a brilliant young actor is a shock. I'm sending love & condolences to his friends & family, especially his dad, John Bennett Perry, who I worked with on Flamingo Road & Falcon Crest."

The Whole Nine Yards actress, who worked alongside dad Bruce Willis and Perry during the 2000 film, shared a touching tribute after Perry's passing.

"I'm so sad to hear about Matthew Perry passing," she captioned an Instagram post. "When I was a kid and I was on set while he and my dad were doing whole nine and whole 10 yards he was so kind and funny and sweet with my sisters and me and I think his physical comedy and that movie still makes me laugh so much, I know he had many challenges in his life and brought a lot of joy to people with his comedy I hope he can rest peacefully." 

Paget Brewster, who played the role of Kathy in the fourth season of Friends, remembered the time spent alongside the actor on set.

"I'm so very sad to hear about @MatthewPerry," she wrote on X. "He was lovely to me on Friends and every time I saw him in the decades after. Please read his book. It was his legacy to help. He won't rest in peace though.. He's already too busy making everyone laugh up there."

Perry's Odd Couple costar reflected on his legacy, sharing a statement to social media.

"Our #OddCouple family suffered a great loss today," she wrote on X, alongside a photo featuring the cast. "The entire entertainment world has. I am too sad about the news to say more than this: @mattyperry4 was a sweetheart who deserved more peace in this life. 54 is too young to go. We love you, Matty! #RIPMatthewPerry."

The Violet star praised the actor for opening up about his sobriety journey after his passing.

"He struggled so much with addiction and was brave enough to be open and honest about it," Olivia Munn wrote on Instagram Story Oct. 28. "I'm so sorry to his family and friends who are getting this news today. Nothing short of heartbreaking."