SANAA (AFP) - At least two people were killed Wednesday in a fresh round of deadly clashes across Yemen, where anti-regime protests have been raging since late January, medical and official sources said. One protester died of gunshot wounds early Wednesday when police opened fire on student demonstrators near the university in the capital Sanaa overnight, a medical official said. The university has been a focal point for protesters seeking to end the 32-year rule of autocratic President Ali Abdullah Saleh, a key US ally in the fight against Al-Qaeda's offshoot in the Arabian Peninsula. Around 30 people have been killed in bloody protests across the impoverished and deeply tribal country, which was already battling a Shia insurgency in the north, jihadists linked to Al-Qaeda, and a southern secessionist movement. Interior Minister Motahar Rashad al-Masri denied anyone had been killed, but confirmed several people had been shot and one was in critical condition in hospital. "Three injured protesters and three members of the security forces, some of whom were shot by bullets, are still at the hospital. No one was killed but one bystander, not a protester, was seriously wounded," he told AFP. The medical official said three demonstrators were also wounded by gunfire, while some 60 others suffered light injuries from being beaten by police or inhaling tear gas. A security official said 12 policemen were injured by rocks hurled by demonstrators. Clashes erupted when police intervened to prevent students from expanding their tent city to a street close to University Square. A policeman who was injured in the violence said the protesters "opened fire" on the security forces, who responded in kind. "When the protesters heard the shooting, around 1,000 of them gathered to attack security forces, but the police had to use tear gas to disperse them," he said. Parliamentary opposition groups known as the Common Forum condemned the police. "Even the medical teams coming to rescue the wounded were not spared the attacks," spokesman Mohammed Qahtan said in a statement. The alliance said it held "Saleh personally accountable for the crime committed by the central security and the republican guard against the students."