VAR was not in operation during some of Ipswich’s 1-1 draw with Manchester United after a fire alarm at Stockley Park.
Sky Sports confirmed the incident during coverage of the first half when the Red Devils led 1-0 thanks to an early Marcus Rashford strike.
The fourth official appeared to be telling managers Kieran McKenna and Ruben Amorim of the situation at Stockley Park.
Premier League Match Centre tweeted: “The match will be operating without VAR until further notice due to a fire alarm at the VAR Hub at Stockley Park.”
VAR resumed before the end of the first half.
Reacting to the mishap, one fan said: “Can we do this every week?”
While another added: “Fire alarm at VAR loool what the hell man .”
And a third replied: “VAR turned off? Nice one.”
Man Utd had made the perfect start to the Amorim era with a goal in just 81 seconds.
Amad Diallo found Rashford who tapped home from close range for his second Premier League goal of the season.
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But Ipswich got on top before the break and equalised in the 43rd minute thanks to a deflected effort from Omari Hutchinson.
Amorim lined up in his familiar 3-4-3 formation with Noussair Mazraoui in a back three alongside Matthijs de Ligt and Jonny Evans.
Yet it was a largely disappointing display from Man Utd as Ipswich overwhelmed them.