Militants kill four in Tunisian border attack

TUNIS (Reuters) - Islamist militants disguised as security officials killed three Tunisian policemen and a civilian in an attack near the border with Algeria, the state news agency TAP said on Sunday.

The agency did not name any group in the attack. Tunisia's security forces have been battling militants from the banned Islamist movement Ansar al-Sharia, whose leader has declared allegiance to al Qaeda's North Africa wing.