After St. Patrick’s Junior Choir Drumgreenagh took to the stage to begin their performance, they were struck by a technical glitch which forced Ant and Dec to intervene.
The presenting duo quickly ran onstage to stop the act with Ant heard saying: “Hang on. Two secs. Everything okay? Everything okay?”
Dec calmly added: “We’re going to just stop it there. We’ve had a few technical problems.”
However, as the school choir made up of eight to 12-year-olds patiently awaited their turn to sing Katy Perry’s hit single Roar, a track was played with their voices on.
The school choir came under fire from Britain's Got Talent viewers
Ant and Dec had to rush onstage after the technical glitch
Many viewers of the ITV show were shocked by the unfolding events and rushed to social media to accuse the school children of miming.
One fan wrote on Twitter: “Wait, what was with that technical hitch with the choir?! Are they miming?! #BGT.”
“That choir is miming. Technical issue just exposed the truth #BritainsGotTalent #BGT,” claimed another.
A third added: “Technical difficulties reveal choir of 8 year olds miming on Britain's Got Talent? Ouch.. #BritainsGotTalent #MimingTalent."
Ant and Dec were forced to intervene after a technical glitch Britain's Got Talent: Most memorable moments Mon, May 1, 2017
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The Britain's Got Talent judges watched on as the events unfolded
While another person thought the track was there to help the choir: “Don't think the kids were miming? I think they just had a backing track to give them some guidance or something idk #BGT.”
Express.co.uk has contacted Britain’s Got Talent for comment.