TUNIS, Tunisia (AP) — Militants in eastern Tunisia staged two simultaneous attacks on army posts while soldiers held a Ramadan feast, killing at least 14 soldiers, authorities said Thursday.

An extremist group believed linked to al-Qaida’s North Africa arm claimed responsibility for the attacks on Mount Chaambi on its Facebook page, calling Tunisian security forces “tyrants.” The Okba Ibn Nafaa brigade has claimed past attacks in the region near the Algerian border, where Tunisian security forces have been trying to root out Islamic extremists.