Television presenter Paul O'Grady is in hospital after suffering an angina attack, a friend has said.
The 58-year-old comedian, who has had two heart attacks previously, told radio DJ Pete Price he was undergoing surgery today.
In a text message sent to Mr Price yesterday, he said: "I have had an angina attack and I will need a few days' rest.
"I am going to be out of the game for quite a while, and am going in for surgery tomorrow."
Mr Price told the Liverpool Echo that O'Grady had been overworking.
"When I saw he wasn't on TV I texted to ask what had happened and he told me about it. He is a total workaholic, and I have told him he needs to take things easy," he said.
More top news
A plan to secure the future of Port Talbot steelworks will be unveiled to staff on Wednesday, ITV News understands.
The 54-year-old, who has been in office since April 2014, will stand down from his role as Prime Minister to focus on his campaign.
US comedian and talk show host Jimmy Kimmel is to host the 2017 Oscars ceremony, according to reports.