BBC issued an apology on Tuesday after their FA Cup coverage was interrupted by a pornographic audio clip.

Audio of a woman moaning was played at high volume just as host Gary Lineker was seeking the opinion of fellow pundit Alan Shearer ahead of Liverpool’s 1-0 win over Wolverhampton Wanderers.

“I don’t know who’s making that noise,” said Lineker with a laugh. “Somebody’s sending something on someone’s phone, I think. I don’t know whether you heard it at home.”

A frenzied studio hunt uncovered a planted mobile phone and YouTube prankster Daniel Jarvis claimed he was behind the stunt on Tuesday’s show, according to the BBC.

With the coverage of the match itself on air, the studio had time for a detailed search began that led to the discovery.

The former England striker later tweeted: “As sabotage goes it was quite amusing.”

BBC issued a statement later saying: “We apologise to any viewer offended during the live coverage of the football this evening.

“We are investigating how this happened.”