BE CAREFUL TONIGHT, Justin Bieber fans.

Concert-goers have been warned to check their tickets for his sold-out concert at the 3Arena in Dublin tonight, after ‘numerous’ people turned up at last night’s Bieber gig with fake or invalid tickets.

Concert promoters Aiken Promotions said that a large number of people were refused entry from the concert last night due to the bogus tickets.

The promoter has urged people not to purchase tickets from unofficial sources.

“Last night, for the first night of Justin Bieber’s Purpose World Tour in Dublin, numerous people arrived with bogus/invalid tickets which had been bought via various different online resale sites,” Aiken said in a statement.

“Purchasing from these sites can result in huge financial loss and disappointment for fans who may arrive at the venue only to be refused entry without recourse.”

The two gigs in Dublin are part of Bieber’s Purpose world tour – his third worldwide tour in the past six years – and both sold out quickly.

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