Turkish Police Return to Taksim Square with More Teargas and Water Cannon

Turkey's riot police have returned for the second time in a day to clear protesters from Taksim Square in Istanbul with teargas and water cannon.

The central square and nearby Gezi Park, the central focus of the protests, were shrouded in a plume of the gas, sending protesters fleeing into narrow side streets .

Crowds have started to fill the square following a call from the Taksim Solidarity Platform, which organises the anti-government demonstrations.

Earlier in the day, police in heavy riot gear clashed with protesters over a new barrier inside the square. Security forces pulled back from the park and reconverged nearby.

"We will never allow people to push things on us, force things on us," Prime Minister Recep Tayyip Erdogan told a meeting of his Justice and Development Party (AKP) in parliament. "And we will never force things either."

In contrast to his earlier belligerence, Erdogan has agreed to hold talks with protesters - but has still warned them not to cross the line.

"I particularly request an end to the demonstrations. If you [demonstrators] resort to some other means or continue in the same way, pardon me, but I will have to speak the language you understand," he said.

"Because there is an end to patience. You cannot show this country as one when there is an environment of terrorism.