Irish actor Pat Laffan, best known for playing milkman Pat Mustard in Father Ted, died at the age of 79.
Announcing the news, his agents described him as "one of the main actors of his generation".
Father Ted's creator, Graham Linehan, tweeted: "Rest in peace, Pat, a pleasure to work with you."
Throughout his career, Laffan has appeared in nearly 40 films and made 30 appearances on TV, including the BBC's EastEnders and RTE's The Clinic.
He was also known to the Irish public for his portrayal of Mr Burgess in Roddy Doyle's 1993 film, The Snapper.
In a statement on social media, the agency Lisa Richards, who represented Laffan for almost 30 years, said it was with "tremendous sadness" that she could announce her death.
"Everyone here will remember him first of all as our friends and mentors and we will miss him terribly", added the agency.
"We send our heartfelt condolences to his friends and his family".
Pauline McLynn, who played Mrs. Doyle, the housekeeper of Craggy Island Parochial House to Father Ted, published a short tribute to Laffan on Twitter saying "RIP the wonderful Pat Laffan".
Laffan's character of a sleazy milkman was positioned as Mrs. Doyle's love interest, with the writers of the show suggesting they had relationships with all the women who delivered milk every morning.
During the & # 39; 60 and & # 39; 70 years, Laffan was a member of the Abbey Theater Company.
The company's Twitter account published a tribute, saying that the deceased actor would "seriously fail".
He read: "It is very sad to know that Pat Laffan has disappeared. His career in the Abbey began in 1961 and has spanned five decades."
The Abbey shared a photo of him in what they said was one of his first appearances in The Enemy Within in 1962.
Laffan also served as director at the Peacock Theater and directed at the Gate Theater between 1979 and 1982.
The Gate also tweeted a tribute, describing Laffan as "an incredible force in the Irish theater community".