Anthony Clark, beloved star of the sitcom "Yes, Dear," has passed away at the age of 62. While an official cause of death has not been released, he died on Wednesday from complications related to pneumonia.

Clark's former co-star, Mike O’Malley, shared the sad news on Wednesday, revealing that the actor had passed away the day before. O'Malley described Clark as "a hilarious guy," recalling, "When my wife Lisa and I were dating back in the mid-nineties, Anthony was already famous in Boston, regularly selling out comedy shows."

O’Malley remembered seeing Clark perform at The Comedy Connection, where he and Lisa "laughed and laughed." He added, "He was so unique — one of those comics who is laughing along with you at the absurdity of his stories and observations," noting he was "a fan before [he] was a friend." The pals last spoke "three weeks ago" by phone, with O'Malley writing, "He had us laughing loudly once again." O'Malley concluded his post, which included snapshots from the CBS sitcom that "ended 20 years ago after 122 episodes," with "Rest in peace Tony."

Fans flooded the comments section with tributes, mourning the loss of the actor. One person wrote, "RIP Anthony. You made us all laugh so hard," while another added, "He was a genuinely funny comedian who clearly brought a lot of people joy. Thinking of him and you." A third commenter remarked, "'Yes, Dear' was a great show. ! to all that loved and knew him," and a fourth lamented, "'Yes, Dear' got us through some times ! RIP."

Celebrities also paid their respects. Comedian Dane Cook, who performed with Clark in Boston, wrote, "He was one of the best live acts I’ve ever seen. Destroyed to a point he made you wanna quit right then and there while watching him do it effortlessly. This is really terrible to hear. ! "

"Reno 911!" actor Nick Swardson took to Instagram to remember Clark as "one of his best friends." Swardson, who opened for Clark's stand-up shows "for years," shared, "I had so many great times with this dude. Non stop laughs. I hope he is at peace now. RIP Tony."