Unidentified gunmen have killed two Saudi border guards who were patrolling Saudi Arabia’s border with Yemen, the Saudi state news agency said on Thursday.

Unidentified gunmen have killed two Saudi border guards who were patrolling Saudi Arabia's border with Yemen, the Saudi state news agency said on Thursday.
   
The gunmen opened fire on a border patrol early on Wednesday in Dhahran al-Janoub in the southwestern province of Asir, SPA reported, but did not say who was behind the attack.