One of the recurring comedians on “Whose Line Is It Anyway?” has died.

Tony Slattery was 65 years old.

His partner said Slattery died of a heart attack, Sky News reported.

“It is “It is with great sadness we must announce actor and comedian Tony Slattery, aged 65, has passed away today, Tuesday morning, following a heart attack on Sunday evening,” a statement on behalf of Mark Michael Hutchinson said.

He was part of the show on the BBC’s Channel 4 starting in 1988. The show was made for an American audience, airing on ABC and eventually The CW, Deadline reported.

Slattery was born in 1959 and eventually attended the University of Cambridge. He was the president of the improv group Cambridge Footlights whose distinguished alumni include his classmates Stephen Fry, Emma Thompson and Hugh Laurie.

In addition to his improv career, he also appeared in movies such as “The Crying Game,” “Peter’s Friends” and “How to Get Ahead in Advertising,” the BBC reported.

Slattery had his issues with mental health including being diagnosed with bipolar disorder and having substance abuse issues which led to his going bankrupt, Sky News reported.

Fry paid tribute to Slattery on social media writing: “A cruel irony that fate should snatch him from us just as he had really begun to emerge from his lifelong battle with so many dark demons.

“Lovely, at least, this past year for him to have found to his joyous surprise that he was still remembered and held in great affection. Love and condolences to Mark, his staunch, devoted life partner of almost 40 years.”

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