No casualties have been reported so far, but the fighting has intensified near two UN positions, forcing peacekeepers to take shelter, he said.
The UN Disengagement Observer Force "observed the continued presence of roadblocks with improvised explosive devices in the vicinity of UN positions which affects the freedom of movement of UNDOF personnel," he said.
"Incidents of threatening behavior against UNDOF personnel from armed members of the opposition were also reported," he said.
Meanwhile, Israeli forces returned fire Saturday after Syrian shells fell on a part of the Golan occupied by Israeli troops.
Israel's ambassador to the United Nations, Ron Prosor, protested against the shelling in a letter to the UN Security Council, warning "these sorts of provocations will not be tolerated."
UNDOF has been monitoring the ceasefire between Israel and Syria since 1974.
The situation in the Golan has been tense since the start of the conflict in Syria more than two years ago.
Israel, which is technically at war with Syria, captured 1,200 square kilometers (463 square miles) of the Golan Heights during the Six Day War in 1967, and then annexed it, an action never recognized by the international community.
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The UN Disengagement Observer Force "observed the continued presence of roadblocks with improvised explosive devices in the vicinity of UN positions which affects the freedom of movement of UNDOF personnel," he said.
"Incidents of threatening behavior against UNDOF personnel from armed members of the opposition were also reported," he said.
Meanwhile, Israeli forces returned fire Saturday after Syrian shells fell on a part of the Golan occupied by Israeli troops.
Israel's ambassador to the United Nations, Ron Prosor, protested against the shelling in a letter to the UN Security Council, warning "these sorts of provocations will not be tolerated."
UNDOF has been monitoring the ceasefire between Israel and Syria since 1974.
The situation in the Golan has been tense since the start of the conflict in Syria more than two years ago.
Israel, which is technically at war with Syria, captured 1,200 square kilometers (463 square miles) of the Golan Heights during the Six Day War in 1967, and then annexed it, an action never recognized by the international community.
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