At least two people were killed Tuesday after government forces fired a mortar shell near a protester camp in the Yemeni capital Sana'a, activists said.
An activist at the protest camp, in Tagheer or Change Square, which has been the epicentre of protests against the rule of President Ali Abduallah Saleh for the past seven months, told dpa that one of those killed was a child, DPA reported.
Another four people were also reportedly injured in the attack.
Media reports said the shells fell on Hayel Road, where the first armoured division of the army is stationed. The division is led by General Ali Mohsen al-Ahmar, who had defected in support of anti-regime protesters.
Late Monday, forces loyal to Saleh bombarded villages in the Sharab districts, located in the restive southern province of Taiz, where armed tribesmen have reportedly sided in favor of the youth-led uprising.
Taiz, Yemen's second largest city and flashpoint for anti-Saleh protests, has witnessed ongoing violent confrontations since fresh violence rocked Yemen around two weeks ago.
This violence comes after UN envoy to Yemen, Jamal bin Amr, left Sana'a Monday following a two-week diplomatic mission that failed to find a solution to the country's political deadlock.
Millions of Yemenis have taken part in anti-government protests across the country since February. Some 1,480 people have been killed in clashes between security forces and opponents of Saleh, according to government figures.