ANKARA - Turkey on Monday denied statements by US officials that it had allowed the United States access to its air bases for bombing missions against Islamic State (IS) militants in Syria.

A government official said there was no new agreement over the use by the United States of the Incirlik air base in southern Turkey, which US air forces already use for logistical and humanitarian purposes.

“There is no new agreement with the United States about Incirlik,” the official, who asked not to be named, told AFP in Ankara.  “Negotiations are continuing” based on conditions Turkey had previously laid out such as a safe zone inside Syria backed up by a no-fly zone, the official added. “There is no change in our position,” the official said.

A senior US defence official said Sunday that Turkey has granted the US forces access to its air bases, including Incirlik, for the bombing campaign against IS.

“Details of usage are still being worked out,” the US official told AFP on condition of anonymity. Located in southern Turkey in Adana province a short distance from the Syrian border, Incirlik would be an ideal start point for US forces to launch air strikes against IS inside Syria.

Turkey agreed to let Washington use its air bases for the campaign against Islamic State militants as Kurdish fighters kept up their battle Monday to defend the flashpoint town of Kobane. Under a deal announced by US officials, Turkey will also host training for “moderate” Syrian rebels, in the hopes of finally creating a force capable of tackling IS on the ground.

In Kobane, Kurdish militia were reported to have launched a counter-offensive against IS militants overnight but were battling to defend a key post on Turkey’s border with Syria.

IS fighters were also putting strong pressure on pro-government forces in Iraq, with concern over the Anbar province and the key oil refinery of Baiji. With the militants advancing on its doorstep, Nato member Turkey has come under intense pressure to take action as part of a US-led coalition that has been carrying out air strikes in Syria and Iraq.

US officials said that Turkey had agreed to let Washington use its bases for the air campaign, including the key Incirlik Air Base near the border with Syria.

Pentagon chief Chuck Hagel said the agreement included “hosting and conducting training for Syrian opposition members” in Turkey, noting that Ankara would welcome a US Command team next week to “develop a training regimen”.

US military planners have repeatedly warned that the air campaign alone will not be enough to defeat IS, which in June declared an Islamic “caliphate” in the large parts of Syria and Iraq under its control.

Turkish President Recep Tayyip Erdogan on Friday launched an angry tirade at modern day “Lawrence of Arabias” who he said were bent on causing trouble in the Middle East.

British officer T.E. Lawrence, better known as Lawrence of Arabia, helped Arab leaders fight a guerrilla insurgency against the forces of the Ottoman Empire in the desert during World War I.

Especially after the hugely successful 1960s film, Lawrence is still regarded as a hero in Britain and many Arab countries. But Erdogan made clear he saw the iconic British officer - who famously adopted customs of Arab dress - as a symbol of unwanted outside meddling in a region where Turkish influence should count.

Turkish Prime Minister Ahmet Davutoglu on Sunday called for military backing for Syria’s “moderate opposition” to create a “third force” in the war-torn country to take on the Damascus regime as well as IS militants.

In Kobane, Kurdish forces launched a counter-offensive to retake key areas seized by the militants last week, including their captured headquarters.

Kurdish fighters pushed IS militants back from two positions in the south Kobane overnight, the Syrian Observatory for Human Rights said.

Coalition air strikes hit five IS positions in the south and east of the town, the Britain-based monitoring group said.

An AFP reporter just across the border in Turkey said fighting was concentrated early Monday around a border post outside the town whose capture would cut it off from the outside world.

Turkey had moved reinforcements to the border including more tanks and self-propelled artillery, the reporter said.

Kobane has become a highly visible symbol of resistance to IS and its fall would give the militants control of a long stretch of the Turkey-Syria border.

UN chief Ban Ki-moon on Sunday called for urgent action to defend the town, saying thousands faced a potential “massacre” if it fell. But concern has also been growing over Iraq, where IS fighters have been threatening to seize more territory.

Iraqi forces are reported to be under intensifying pressure in Anbar province between Baghdad and the Syrian border, where a roadside bomb killed the police chief on Sunday.

Pro-government forces have also been in trouble around Baiji oil refinery south of IS-held Mosul, where US military aircraft on Sunday for the first time dropped supplies including food, water and ammunition to Iraqi troops.

Washington has insisted it will not send ground troops back to Iraq and Secretary of State John Kerry said Sunday the Iraqis themselves will have to succeed on the ground to win back their country.

“Ultimately it is Iraqis who will have to take back Iraq. It is Iraqis in Anbar who will have to fight for Anbar,” he said in Cairo.

IS has committed widespread atrocities in areas under its control, including attacks on civilians, mass executions, beheadings and enslaving women.

It has also murdered four Western hostages in on-camera beheadings, and on Sunday hundreds gathered in northwest England for a memorial service for British aid volunteer Alan Henning.

The 47-year-old taxi driver had travelled to Syria to help Muslim colleagues deliver aid in a convoy, but was kidnapped and his murder claimed by IS in a graphic video released on October 3.

His killing outraged the Muslim community in Britain and he was hailed at Sunday’s ceremony as hero who “went to Syria to help at a time when the whole international community had abandoned them”.

More than 180,000 people have been killed in Syria since an uprising against President Bashar al-Assad’s regime began in 2011, evolving into a several-sided civil war that has drawn thousands of militants from overseas.