MRS Brown's Boys star Brendan O'Carroll has apologised for making a racist remark which sparked a BBC investigation.
The Irish comedian, 69, used an offensive term during a read-through of this year's Christmas special with cast and crew last Wednesday.
Those present were said to have been shocked by the slur and flagged it with the BBC, which acted immediately.
The Beeb ordered an urgent probe, meaning rehearsals for the Christmas special were temporarily suspended.
Last night, O'Carroll said: "At a readthrough of the Mrs Brown's Boys Christmas specials, there was a clumsy attempt at a joke, where a racial term was implied.
"It backfired and caused offence, which I deeply regret and for which I have apologised."
The corporation added: "While we don't comment on individuals, the BBC is against all forms of racism and we have robust processes in place should issues ever arise."
O'Carroll is the creator of the hit sitcom, which began in 2011. He plays the title character, Agnes Brown, the matriarch of a large Irish family.
Mrs Brown's Boys has been a ratings hit for the BBC and has won Best Comedy at the National TV Awards six times.
The BBC has only recently recommissioned a fifth series, with production to commence in spring, as well as the festive specials.
A source said: "The whole production of the Christmas special was paused while the investigation was carried out.
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