BEIRUT >> Insurgents’ stunning march across Syria accelerated Saturday with news that they had reached the suburbs of the capital and that government forces had withdrawn from the central city of Homs. The government was forced to deny rumors that President Bashar Assad had fled the country.

The loss of Homs is a potentially crippling blow for Assad. It stands at an important intersection between Damascus and Syria’s coastal provinces of Latakia and Tartus — the Syrian leader’s base of support and home to a Russian strategic naval base.

The pro-government Sham FM reported that government forces took positions outside Syria’s third-largest city, without elaborating. Rami Abdurrahman who heads the Britain-based Syrian Observatory for Human Rights, said Syrian troops and members of different security agencies have withdrawn from the city, adding that rebels have entered parts of it.

The capture of Homs is a major victory for insurgents, who have already seized the cities of Aleppo and Hama, as well as large parts of the south, in a lightning offensive that began Nov. 27. Analysts said Homs falling into rebel hands would be a game-changer.

The rebels’ moves around Damascus, reported by the monitor and a rebel commander, came after the Syrian army withdrew from much of southern part of the country, leaving more areas, including several provincial capitals, under the control of opposition fighters.

The advances in the past week were among the largest in recent years by opposition factions, led by a group that has its origins in al-Qaida and is considered a terrorist organization by the U.S. and the United Nations. In their push to overthrow Assad’s government, the insurgents, led by the Hayat Tahrir al-Sham group, or HTS, have met little resistance from the Syrian army.

For the first time in the country’s long-running civil war, the government now has control of only three of 14 provincial capitals: Damascus, Latakia and Tartus.

The U.N.’s special envoy for Syria, Geir Pedersen, on Saturday called for urgent talks in Geneva to ensure an “orderly political transition.” Speaking to reporters at the annual Doha Forum in Qatar, he said the situation in Syria was changing by the minute. Russian Foreign Minister Sergey Lavrov, whose country is Assad’s chief international backer, said he feels “sorry for the Syrian people.”

In Damascus, people rushed to stock up on supplies. Thousands went to Syria’s border with Lebanon, trying to leave the country.

Many shops in the capital were shuttered, a resident told The Associated Press, and those still open ran out of staples such as sugar. Some were selling items at three times the normal price.

“The situation is very strange. We are not used to that,” the resident said, insisting on anonymity, fearing retributions.

“People are worried whether there will be a battle (in Damascus) or not.”

It was the first time that opposition forces reached the outskirts of Damascus since 2018, when Syrian troops recaptured the area following a yearslong siege. The U.N. said it was moving noncritical staff outside the country as a precaution.

\Syria’s state media denied social media rumors that Assad left the country, saying he is performing his duties in Damascus.

He has had little, if any, help from his allies. Russia, is busy with its war in Ukraine. Lebanon’s Hezbollah, which at one point sent thousands of fighters to shore up Assad’s forces, has been weakened by a yearlong conflict with Israel. Iran has seen its proxies across the region degraded by regular Israeli airstrikes.

U.S. President-elect Donald Trump on Saturday posted on social media that the United States should avoid engaging militarily in Syria.