UEFA opened disciplinary proceedings against Liverpool on Thursday, a day after fans threw bottles at Manchester City's team bus ahead of their Champions League quarter-final first leg at Anfield. Liverpool have been charged by European soccer's governing body with setting off fireworks, throwing objects, acts of damage and crowd disturbances and the case will be dealt with by UEFA's Control, Ethics and Disciplinary Body on May 31. Fans set off red flares and sang their club's songs before the City coach arrived and beer cans and at least one bottle were thrown at the bus. Liverpool apologised to Manchester City for the incident. (For more sports news and updates, follow Ahram Online Sports on Twitter at @AO_Sports and on Facebook at AhramOnlineSports.)