Gunmen from a pro-Syrian Palestinian organization shot and killed as many as 14 people during a protest at a Palestinian refugee camp near Damascus on Monday, WAFA, the official Palestinian news agency, reported on Tuesday.

According to WAFA and other reports, the fighters from the Popular Front for the Liberation of Palestine-General Command, which is backed by Syria, clashed with mourners in the Yarmouk refugee camp after funerals for Palestinian protesters who were killed on Sunday at the border between Syria and the Israeli-held Golan Heights.

The shootings on Monday took place after mourners accused the organization of sacrificing Palestinian lives by encouraging protesters to demonstrate at the Golan Heights, Reuters reported. Reports also referred to divisions in the camp between those who support the government of President Bashar al-Assad of Syria and those who sympathize with the Syrian opposition, which is seeking expanded democratic rights.

The Palestinian leadership in the West Bank on Tuesday condemned what it called the “crime” committed in the Yarmouk refugee camp by what it called “armed groups” of the Popular Front for the Liberation of Palestine-General Command. The leadership said in a statement published by the Palestinian news agency that the Popular Front’s fighters had fired live ammunition into crowds of young demonstrators at the camp.