Authorities in Saudi Arabia say a fourth French national has died of wounds suffered in an attack in northwestern Saudi Arabia.

Officials say a teenager died in a hospital Tuesday of wounds sustained when gunmen shot at a group of nine French nationals who had stopped along a road on Monday.  Three had died shortly after the attack.

A Saudi spokesman said the French nationals were residents of the Saudi kingdom who had been visiting historic sites.

Saudi Arabia has been battling al-Qaida militants in the kingdom, and the terrorist group has targeted Westerners in the past.