Carlsen informs arbiter of opponent's phone after agreeing to her selfie request

World number one chess player Magnus Carlsen took a selfie with opponent Alua Nurman after agreeing to her request before their game at the Grenke Chess Festival. He then informed one of the tournament arbiters about the device, following which it was taken away. According to FIDE rules, players aren't allowed to carry devices in the playing venue without permission.