3 soldiers and 2 civilians were injured in the explosion that destroyed a security patrol in Yemen's Southern Abyan Province on Saturday.
An explosive device was placed under the patrol when it stopped at a security checkpoint in southern Jaar city. The injured were near the patrol and were taken to hospital, with one soldier in critical condition.
Forces and military reinforcements cordoned off the site and launched a hunt for suspects.
The bombing came amid a series of Al-Qaeda attacks against security headquarters, officers and patrols in southern and southeastern regions. Many soldiers and civilians were killed in the attacks but suspects are still at large.
Separately, two people including a border guard were killed in the clashes that broke out between tribesmen and Houthi militants in the district of Barat in Jawf Province.
According to tribal sources the confrontations erupted amid Houthi demands to hand over tribesmen accused of killing Houthis from the tribes of Al-Marana, which the Houthi fighters are besieging since early this morning.