Dutch police say the arrest was made as part of a "targeted action" against pick-pocketing at a gig by Canadian rockers Sum 41.
A 34-year-old man has been arrested in the Netherlands after police found he had stuffed 30 mobile phones into his cycling shorts.
The suspect, from Romania, was arrested during a Sum 41 music concert in Amsterdam-Zuidoost on January 21 amid a "targeted action" against pickpocketing, according to local police.
It came after police in neighbouring Belgium reported that 50 mobile phones had been stolen at a concert for the same band in Antwerp earlier in the month.
As a result, extra officers were deployed for the concert in the Netherlands who managed to track down the suspect using descriptions from victims.
The man will remain in custody before facing a judge later this week, the police statement said.