Following an assassination attempt on Israeli ambassador Shlomo Argov in London, the IDF on 6 June 1982 launched what they called Operation Peace for Galilee and once again invaded Lebanon. In Burj el-Shemali - as in many other camps - Palestinian combatants "put up a determined fight". The aerial attacks with phosphorus bombs reportedly killed some 100 civilians in one shelter alone. The total number of non-combatant casualties was estimated to be more than 200 in that camp alone. Estimates of IDF casualties in Rashidieh and Burj El Shimali ranged between 21 and "nearly 120".