Belgian authorities have charged two men with terrorist offences after raids overnight, the federal prosecutor's office said Saturday amid reports of a planned attack on a Euro 2016 fanzone. It said several houses were raided overnight in Verviers, in eastern Belgium, and in Tournai, close to the border with France. Belgium remains on high alert after attacks in March claimed by the Islamic State group on Brussels airport and on the city's busy metro system left 32 people dead.