benghazi libya two soldier kill three wound military checkpoint northeastern libya wednesday witness officials say attack claim islamic state witness say dozen arm vehicles use dawn assault checkpoint 60 km 37 miles south city ajdabiya run eastern-based libyan national army lna attackers set fire checkpoint one victims burn inside car say mustafa boufjara spokesman ajdabiya security department image checkpoint show char checkpoint cabin two burn cars statement carry islamic state amaq news agency say militants seize vehicle equip machinegun well weapons ammunition islamic state militants carry several attack lna checkpoints recent months jihadists try regroup desert base since lose stronghold sirte 390 km 240 miles west ajdabiya last december islamic state claim deadly attack libyan checkpoint