DHAKA: US-led air strikes have killed several hundred Islamic State in Iraq and the Levant (ISIL) fighters around the Syrian town of Kobane, the Pentagon said, but it cautioned that the town near Turkey's border could still fall to the Sunni rebel group.

The US-led coalition launched about 40 air strikes on the mainly Kurdish town of Kobane in the past 48 hours, the largest number since the strikes inside Syria began on September 22.

Rear Admiral John Kirby, a Pentagon spokesman, said bad weather in Iraq had freed up coalition firepower to attack Kobane targets, reports Al-Jazeera.

But he added the situation was fluid, with the Kurdish militia still controlling the town, although with pockets held by ISIL fighters.

"The more they want it, the more resources they apply to it, the more targets we have to hit," Kirby said, adding: "We know we've killed several hundred of them."

The strikes, he added, had degraded ISIL's ability to move around forces and sustain themselves, "and it's not like they have a whole heck of a lot of ability to reconstitute that".

The siege of the mainly Kurdish town on the border with Turkey has become a focus of the US-led effort to halt the fighters, who have seized swaths of territory in Syria and Iraq.

The United Nations has warned of a massacre if the town falls to the rebels, who now control nearly half of it.

BDST: 1112 HRS, OCT 16, 2014