A third day of violence in the Yemeni capital has left two people dead in fierce fighting between pro-government soldiers and troops who have switched sides.
The military confrontation between opposition forces loyal to the defected General Ali Mohsen and government troops has been triggered by a brutal crackdown on several days of protests. More than 50 people have been killed as demonstrators called for exiled President Ali Abdullah Saleh to hand over power.
It is the worst bloodshed since the start of the eight-month uprising.
An escalation into outright military battles in Sanaa has been a major concern for many in Yemen, who fear this will make it even harder to reach a political settlement.