26/01/2015 12:45 GMT | Updated 26/01/2015 12:59 GMT

The Islamic State Has Lost Kobane, According To Kurdish Forces

In a highly significant victory, Kurdish fighters backed by intense US-led airstrikes have pushed the Islamic State group out of the Syrian town of Kobane, a major loss for extremists whose hopes for easy victory dissolved into a bloody, costly siege.

Fighters raised a Kurdish flag on a hill in the border town near Turkey that once flew the Islamic State group's black banner.

It represents a key conquest both for the embattled Kurds and the coalition of nations taking part in air-strikes, whose American coordinator had predicted that the Islamic State group would "impale itself" on Kobane.

A picture taken on January 26 from Sanliufra shows a flag of YPG (People's Protection Units) flying in the Syrian town Kobane

The Britain-based Syrian Observatory for Human Rights and senior Kurdish official Idriss Nassan said earlier this morning that the Islamic State group had been nearly expelled, with some sporadic fighting on the eastern edges of the town.

"The Islamic State is on the verge of defeat," said Nassan, speaking from Turkey near the Syrian border. "Their defenses have collapsed and its fighters have fled."

In September, Islamic State fighters began capturing some 300 Kurdish villages near Kobane and thrust into the town itself, occupying nearly half of it. Tens of thousands of refugees spilled across the border into Turkey.

By October, Islamic State control of Kobane was so widespread that it even made a propaganda video from the town featuring a captive British photojournalist, John Cantlie, to convey its message that Islamic State fighters had pushed deep inside.

The town's capture would have given the jihadi group control of a border crossing with Turkey and open direct lines between its positions along the border.

US Secretary of State John Kerry declared it would be "morally very difficult" not to help Kobane.

Air assaults began September 23, with Kobane the target of about a half-dozen airstrikes on average each day, and often more. More than 80% of all coalition airstrikes in Syria have been in or around the town. At one point in October, the US air dropped bundles of weapons and medical supplies for Kurdish fighters — a first in the Syrian conflict.

Analysts, as well as Syrian and Kurdish activists, credit the air campaign and the arrival in October of heavily armed Kurdish peshmerga fighters from Iraq, who neutralised the Islamic State group's artillery advantage, for bringing key areas of Kobane under Kurdish control.

Nassan said US-led coalition strikes became more intense in the past few days, helping Kurdish fighters in their final push toward Islamic State group positions on the southern and eastern edges of the town. He said he was preparing to head into Kobane on Tuesday and expected the town to be fully free by then.

Smoke billowing from the Syrian town Kobane, also known as Ain al-Arab, following clashes between Kurdish forces and Islamic State

Gharib Hassou, a representative of Syria's powerful Kurdish Democratic Union Party, or PYD, based in Southern Kurdistan, said fighting was still going in "two or three streets," adding that most of the militants withdrew to the town of Tal Abyad to the east.

"There are a lot of dead bodies ... and they left some of the weapons," he said. Kurdish fighters also suffered high casualties, he said, adding that more reinforcements will be sent to reinforce control over the town.

Rami Abdurrahman, director of the Observatory, said the Kurdish force was led by Mohammed Barkhadan, the Kobane commander of the main Kurdish militia known as the People's Protection Units, or YPG. Barkhadan is a well-known militia leader among Kurds and in 2013 he led an offensive that ousted Islamic militants out of the northern Syrian town of Ras Ayn, Aburrahman said.

Since mid-September, the battle for Kobane has killed some 1,600 people, including 1,075 Islamic State group members, 459 Kurdish fighters and 32 civilians, the Observatory reported earlier this month. The Islamic State group, increasingly under pressure, has carried out more than 35 suicide attacks in Kobane in recent weeks, activists say.