BT SPORT apologised to viewers after microphones picked up an X-rated blast during Liverpool vs Real Madrid.
Commentator Darren Fletcher apologised to anyone that may have heard the shout from Anfield.
Fans reacting on social media claimed to have heard a cry of “f***ing wake up” come through the pitchside mic.
It came during a pulsating encounter at Anfield that saw Liverpool throw away a two goal lead.
Darwin Nunez put the Reds ahead with an outrageous flicked effort, before Mo Salah doubled the lead following a Thibaut Courtois howler.
The goalie saw the ball rebound off his knee and into the path of Salah, who gratefully poked home.
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But Real Madrid came roaring back, levelling the score through a Vinicius Jr brace.
Vinicius copied Cristiano Ronaldo’s celebration after finding the back of the net.
His second came after another goalkeeper error, although this time it was Alisson at fault.
The Anfield keeper saw a shocking pass rebound off Vinicius and loop into the back of the net.
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It prompted an unusual reaction from Jurgen Klopp, with the Liverpool boss clapping his hands following Alisson’s error.
Eder Militao headed the visitors ahead after the break, before a Karim Benzema double made it 5-2 on the night.
And 5-2 was how it was ended, as Liverpool failed to exact revenge on Los Blancos for last season’s Champions League final defeat.
Klopp’s side now have a mountain to climb going into the second leg at the Bernabeu on March 15.
Source: Soccer - thesun.co.uk