A French diplomat was killed and another injured on Monday in the center of Yemeni capital Sanaa.

A French diplomat was killed and another injured on Monday in the center of Yemeni capital Sanaa, a senior security source has said.

The source, who asked not to be named, said the attack was carried out by unidentified militants near the French embassy in Sanaa.

"The victims worked in the embassy," the source said, declining to give any further information on the two French diplomats or the perpetrators of the attack.

There has been no claim of responsibility for the attack.

Yemen has been dogged by turmoil since pro-democracy protests in 2011 forced autocratic president Ali Abdullah Saleh to step down after 33 years in power.