One Direction have fallen victim to a prank pulled by Ant and Dec, the presenting duo have revealed.
The pair fooled the chart-topping band into thinking a fan, which was actually Dec in disguise, was having an asthma attack, the Daily Mirror reported.
The prank was filmed and will be screened on ITV show Saturday Night Takeaway this weekend.
Ant revealed: "The ruse was that 1D's biggest fans had flown in to meet them. Dec dressed up as one called Jack from New Zealand and I was Ben, a TV host from there.
"I introduced him to the group - and the meeting didn't go as planned. But they fell for it."
Dec was quoted as saying: "I faked an asthma attack. They panicked and I hyperventilated. They called medical emergencies. It was such fun and they fell for it. We did it in Madison Square Garden before Christmas."
This week Ant and Dec took the best entertainment performance prize for a third consecutive year for their role as hosts of ITV's I'm A Celebrity... Get Me Out Of Here! at the Royal Television Society awards.