BEIRUT (AP) — Insurgents’ stunning march across Syria accelerated Saturday with news that they had reached the gates of the capital and that government forces had abandoned 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, the capital, 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 news outlet 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Britain-based Syrian Observatory for Human Rights, said Syrian troops and members of different security agencies have withdrawn from the city, adding that rebels have entered parts of it.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 insurgency announced later Saturday that it had taken over Homs. The city’s capture is a major victory for the rebels, 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 rebel control of Homs 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.

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.