Turkish Defense Minister Ismet Yilmaz denied a report that some Turkish soldiers had entered Syria at the weekend and said Ankara was not considering sending troops into the neighboring country, Reuters reports citing state-run Anadolu Agency.

"It is not true," Yilmaz told a Turkish parliamentary commission, when asked about the claim in a Syrian foreign ministry letter to the UN Security Council.

"There is no thought of Turkish soldiers entering Syria."

The Syrian government has said Turkish forces were believed to be among 100 gunmen who entered Syria on Saturday, February 13 with 12 pick-up trucks mounted with heavy machine guns, in an operation to supply insurgents fighting Damascus.

Yilmaz also denied reports that Saudi Arabian aircraft had arrived at NATO-member Turkey's Incirlik air base for the fight against Islamic State militants, but said a decision had been reached for Saudi to send four F-16 jets.

Meanwhile, Russian Prime Minister Dmitry Medvedev said in an interview that Moscow does not plan to maintain its military presence in Syria indefinitely, Reuters says.

In an interview with Time magazine Medvedev was asked if Russia would help its ally, Syrian President Bashar al-Assad, in his stated aim of restoring his control over all of Syria.

"We have no plans... for such a never-ending presence in Syria. We are there pursuing an entirely limited, concrete objective," Medvedev said, according to a transcript of the interview released by the government.