BRUSSELS: A Belgian judge on Friday charged three Chechens on suspicion of terrorism offenses, the federal prosecutor’s office said, a day after police launched country-wide raids over fears of an attack in preparation. They are suspected of involvement with the Daesh group’s Khorasan offshoot in central Asia. Seven people, all of Chechen origin, were detained on Thursday. Six suspects appeared before a judge on Friday, who ordered three kept in custody, charging them with offenses including “preparing a terrorist attack.”