Masked gunmen killed an army officer in Tripoli. Suspected car bomb expert Sami Ahmad Atrash died following a shootout in Arsal with police; authorities are conducting raids in Arsal in search of terrorists linked to Atrash. After an Islamic Jihad initiative, Fatah agreed to a memorandum of understanding with Islamists in Lebanon, including Hamas, the Osbat al-Ansar group, and Sheikh Jamal Khattab. The UN called for more aid for Lebanon, warning that the country could collapse from the influx of 1,000,000 Syrian refugees, who have increased its population by 25 percent.