BEIRUT (AP) — Clashes erupted between al-Qaida-linked Syrian rebels and U.N. peacekeepers in the Golan Heights on Saturday after the militants surrounded their encampment, activists and officials said, as the international organization risked being sucked further into the conflict.

Other U.N. peacekeepers were able to flee from a different encampment that that was also surrounded by rebels of the Nusra Front, al-Qaida’s Syrian affiliate, they said.