Sanaa: A Yemeni security official says soldiers have killed six Al-Qaida-linked fighters in a southern city.

Months of battles have failed to fully restore the government's control over the city of Zinjibar.

It is one of several places in the south seized by Islamic militants during the spiralling unrest triggered by the uprising against President Ali Abdullah Saleh.

The security official says six soldiers were wounded in Sunday’s fighting.

The official was speaking on condition of anonymity because he was not authorised to brief reporters.

Anti-government protests continued on Sunday.

In the capital, Sanaa, a UN envoy met Yemen's vice president to push for a transition of power. He also visited a field hospital and met with anti Saleh protesters.