In February 1975, a pro-Palestinian Lebanese MP, Maarouf Saad, was shot and killed, reportedly by the Lebanese Army. His death from his wounds, the following month, and the massacre in April of 27 Palestinians and Lebanese travelling on a bus from Sabra and Shatila to the Tel al-Zaatar refugee camp by Phalangist forces precipitated the Lebanese Civil War. Arafat was reluctant to respond with force, but many other Fatah and PLO members felt otherwise. For example, the DFLP carried out several attacks against the Lebanese Army. In 1976, an alliance of Christian militias with the backing of the Lebanese and Syrian armies besieged Tel al-Zaatar camp in east Beirut. The PLO and LNM retaliated by attacking the town of Damour, a Phalangist stronghold where they massacred 684 people and wounded many more. The Tel al-Zaatar camp fell to the Christians after a six-month siege in which thousands of Palestinians, mostly civilians, were killed. Arafat and Abu Jihad blamed themselves for not successfully organizing a rescue effort.