Anti-regime protesters marched through the Yemeni capital of Sanaa for an eighth straight day on Friday as demonstrations across the country turned violent, leaving at least six dead.
The demonstrators, who want President Ali Abdullah Saleh to quit, fought with government supporters.
Two protesters were killed in the southern city of Taez in a hand grenade attack, while police shot four others dead in Aden as they tried to disperse the crowd.
A total of 27 people were injured in the clashes across Yemen on Friday, dubbed a ‘day of rage’ by the anti-Saleh movement.
Saleh has ruled Yemen for 32 years but has promised to stand down at the end of his current seven-year term in 2013.
Under his leadership, the country has been a close ally of the United States in its fight against al-Qaeda in the region.