"The motorcade of Shaddadi and Arab was attacked from ambush, while moving to the front line, both were wounded," the source said, adding that the politicians were taken to Aden, the biggest city in southern Yemen under government control.
On Tuesday night, the Yemen Voice information portal reported that Shaddadi had died of wounds. The information on Shaddadi's death has not been confirmed.
On Saturday, fighters loyal to Yemeni President-in-exile Abd Rabbuh Mansur Hadi declared the province of Abyan liberated from the Houthi militant movement.
Since 2014, Yemen has been engulfed in military conflict between Houthis, the country’s main opposition faction, and government forces.
Since the conflict in Yemen escalated, more than 1,600 people were killed and more than 6,200 injured, according to the United Nations.