The BBC was forced to apologise to Manchester United fans on Tuesday after a message appeared on their news ticker calling the Premier League club "rubbish".
The insult popped up at the bottom of the screen during a tennis update.
Later in the morning, a presenter apologised to any United fans who may have been offended.
She said the mistake had occurred as someone was learning how to operate the ticker.
The presenter said: "A little earlier, some of you may have noticed something pretty unusual on the ticker that runs along the bottom of the screen with news making a comment about Manchester United, and I hope that Manchester United fans weren't offended by it.
"So apologies if you saw that and you were offended and you're a fan of Manchester United."
A BBC statement said: "There was a technical glitch during training with our test ticker, which rolled over to live programming for a few seconds. We apologised for any offence caused on air."
BBC presenter and Manchester City fan Clive Myrie tweeted: "I had nothing to do with this!!" with the hashtag #mcfc.
