Al-Jazeera Video: Pitched street battle in Yemeni capital

"Two more people have been killed and scores injured in the latest anti-government protests in the Yemeni capital Sanaa, bringing the number of deaths to more than 30 in just two months.

According to medical sources, the latest violence erupted when police fired live rounds and tear gas.

Claims that riot police are using excessive force and suspected prohibited nerve gas have been denied by General Yahya Saleh, the head of the Yemeni security forces.

Al Jazeera's Hashem Ahelbarra reports from a makeshift clinic set up by protesters near University Square, the scene of ongoing protests."