Turkey's President Recep Tayyip Erdogan has suggested he and the US are ready to drive so-called Islamic State (IS) from its Syrian stronghold of Raqqa.

Mr Erdogan said US counterpart Barack Obama floated the idea of joint action against the militants when they met at the G20 meeting in China.

He said Turkey would have "no problem" with such action.

Last month Turkey launched an operation inside Syria, targeting both IS and Kurdish rebels.

Turkish-backed militia drove IS from the border town of Jarablus, but Turkey has also been concerned with checking the advance of Kurdish forces whom it regards as terrorists.

The offensive continues, and Russia, who is allied to Syrian President Bashar al-Assad says it is deeply concerned by the movement of Turkish forces deeper into Syrian territory.

Mr Erdogan's comments on Raqqa were published in Turkish media. There has been no confirmation from the US.

"Obama wants to do some things jointly concerning Raqqa," Mr Erdogan said. "We said this would not be a problem from our perspective.''

"I said 'our soldiers should come together and discuss, then what is necessary will be done'," Mr Erdogan added.