Five Saudi Arabian border guards were killed on Monday in clashes with "enemy elements" who tried to infiltrate the kingdom's border with war-wracked Yemen, the interior ministry said.
The five were killed in eight hours of fighting when the Saudis confronted "enemy elements of armed groups who tried to infiltrate in several places" in the Najran area, the official SPA news agency quoted a ministry spokesman as saying.
It said the frontier guards backed by the country's army thwarted the attempts to cross the border which began at 0300 GMT.
Southern Saudi Arabia, especially border areas with Yemen, have come under sporadic attack since Riyadh took the lead in March 2015 in an Arab military coalition battling Shia Houthi rebels who control northern Yemen.
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