BEIRUT: The Muslim Eid al-Fitr holiday got off to a bloody start in Syria, with at least 84 people dying across the country, most of them soldiers, and Damascus rocked by clashes, a watchdog said on Monday.

The fresh surge of violence Sunday, the first day of the Eid festivities, came as new U.N. peace envoy to Syria, Lakhdar Brahimi, said it was no longer a question of "preventing civil war" in Syria but rather ending it.

The Syrian Observatory for Human Rights said 16 bodies were found in Al-Tall village, a rebel stronghold in Damascus province, and that another 34 soldiers, 28 civilians and 22 rebels died across the country on Sunday.

The Britain-based Observatory, which gathers its information from a network of activists on the ground, reported clashes between rebels and loyalist troops in several southern Damascus neighborhoods, where loud explosions were heard.

Opposition activists of the Syrian Revolution General Commission also said the army used tanks and machineguns to pound the Damascus suburb of Maadamiet Al-Sham through the night.

Aleppo, the main northern city which lies near the Turkish border, has borne the brunt of the conflict since fighting erupted there a month ago, with the regime warning it would be the scene of the "mother of all battles".

Syrians have had to face food shortages, the closure of many shops, and street demonstrations at Eid, the festival celebrated by Muslims across the world to mark the end of the holy month of Ramadan.

President Bashar Assad made a rare public appearance with top officials for Eid prayers at a Damascus mosque on Sunday, while demonstrators took to the streets of the capital and other cities to vent their rage at his regime.

UN observers wound up their troubled mission on Sunday in the face of the escalating violence and a failure by world powers to agree on how to tackle Assad and bring about peace to the strategically vital Middle East state.

The end of the mission came just days after new international envoy Brahimi was named to replace Kofi Annan.

"There are a lot of people who say that we must avoid civil war in Syria, me I believe that we are already there for some time now. What's necessary is to stop the civil war and that is not going to be easy," Brahimi said in an interview with France 24 television.

Syria's popular uprising, which began in March 2011, has spiraled into an armed conflict with more than 23,000 people killed, according to the Observatory. The United Nations puts the death toll at 17,000.

It is impossible to verify the figures.