<p><br /> As the unrest continues, Egypt's Prime Minister Ahmed Shafiq has apologised for the fatal clashes between anti-government protesters and supporters of President Hosni Mubarak.<br /> </p><p><br /> He told Egyptian-owned al Hayat television that he was apologising for the "fatal error," as "there is no excuse to attack peaceful protesters."<br /> </p><p><br /> Fighting broke out in Cairo's Tahrir Square on Wednesday as stones and petrol bombs were thrown. Five people reportedly died and 836 were injured.<br /> </p><p><br /> Shafiq promised that "when investigations reveal who is behind this crime and who allowed it to happen, they will be held accountable and will be punished for what they did."<br /> </p><p><br /> He also appealed to the anti-government protesters to return to their homes "to help end this crisis."<br /> </p><p><br /> The prime minister's apology comes in the wake of denial by other government officials of any state involvement in the clashes.<br /> </p><p><br /> Mr Mubarak has said that he will serve out his current presidential term, which ends in September, but will not run for re-election.<br /> </p>