He also said it was hard to tell which of the migrants were genuine refugees fleeing war-torn countries like Syria, and which were not, as most got rid of their documents prior to trying to cross into Hungary. "Most of them get rid of any kind of ID by the time they get to the Hungarian border. In the woods there are 'mini-cemeteries' of abandoned documents... (disguising their nationality) is one of the reasons they get rid of their IDs."