Clashes resumed in Lebanon’s largest Palestinian refugee camp overnight, with heavy gunfire and shelling wounding at least 20 people and prompting residents of the camp and the surrounding area to flee on Friday.

There had previously been several days of street battles in the Ein el-Hilweh camp between Palestinian President Mahmoud Abbas’ Fatah movement and Islamist groups after Fatah accused the Islamists of gunning down one of their military generals on July 30. Those street battles left at least 13 dead and dozens wounded, and forced hundreds to flee from their homes.