Ten people have been reportedly killed after a car bomb in Damascus. SANA news agency are reporting that 50 people have been injured in the explosion which has also left 20 cars and 15 stores damaged.
Speaking from Moscow UN-Arab envoy Lakhdar Brahimi has said that he regrets that the ceasefire has not been fully complied with and he is pressing on with peace efforts.
He added that the UN has np plans to send in peacekeepers to Syria for now.
Syrian state television has reported that 10 people were killed by a 'terrorist' car bomb in Damascus.
Heavy machine gun fire and the sound of mortar bombs has been heard along the Turkey-Syrian border near the Syrian town of Haram, according to a Reuters witness.
It was not clear whether the firing was from the Syrian army or from rebels fighting to overthrow President Bashar al-Assad.
The firing could be heard from the Turkish border village of Besaslan in southern Hatay province.
The Deputy Prime Minister has said his "thoughts are particularly with the people of Syria" in a video message to mark Eid.
Activists have told Reuters that three people have been killed in tank and sniper fire in the Damascus suburb of Harasta.
Rebels in a northern town close to the Turkish border also reported one of their fighters was shot dead by a sniper early on Friday and a Reuters journalist in the town heard what sounded like four rounds of tank fire.
Syrian President Bashar al-Assad has been filmed at Friday prayers to mark the Muslim holiday of Eid al-Adha, as reports of shelling appear to show that the holiday ceasefire is not holding in Damascus.
Heavy fighting has broken out around a Syrian military base, the Syrian Observatory for Human Rights said, in the first major violation of a ceasefire marking the Muslim holiday of Eid al-Adha.
The Observatory said rebel fighters were trying to storm the base, which is less than half a mile from the main north-south highway linking Damascus to Aleppo, and President Bashar al-Assad's forces had fired artillery at a nearby village.
– OMAR SHAWAF, SYRIAN NATIONAL COUNCIL
We don't believe as Syrian opposition that Bashar Assad will be adhering with this truce and it shows itself today because till now 17 civilians was (were) killed in Syria within the last six hours. So, also the Syrians outside the Syria like the Syrian refugees and Syrian living outside Syria, they don't believe that Assad will be adhering with this truce. That's why nobody plans to go back to Syria, nobody trust Assad anymore.
Residents in the Syrian capita Damascus have reported shelling by Syrian troops just hours before Friday's ceasefire to mark the Muslim holiday of Eid.
Resident say troops positioned on a mountain overlooking the Syrian capital targeted Hajar al-Aswad, a poor neighbourhood inhabited by refugees from the Israeli-occupied Golan Heights. There were no immediate reports of casualties.
Witnesses are reporting that the Syrian Army has directed heavy artillery barrages at a neighbourhood in the South of Damascus, according to Reuters.