Turkish security forces have clashed with Kurdish refugees trying to cross the border from Syria, where they are fleeing an advance by Islamic State militants.
Turkey's Deputy Prime Minister said an estimated 130,000 Kurds had crossed the border in the last three days.
The Turkish force fired water cannon and tear gas at the refugees, while on the Turkish side of the border some pro-Kurdish MPs staged a sit-down protest.
Syrian Kurdish fighters have halted an advance by Islamic State (IS) fighters east of the town of Kobani, a spokesman for the Kurdish forces said.
Thousands of Syrian Kurds have been crossing the border into Turkey fleeing the advance of IS. Read: Turkey 'prepared for the worst' over refugee crisis
Turkey's Deputy Prime Minister has said his government is "prepared for the worst" as hundreds of thousands of refugees stream into his country from Syria.
"We are prepared for the worst scenario, which is an influx of hundreds of thousands of refugees," Numan Kurtulmus told reporters in the capital Ankara.
Turkey's Deputy Prime Minister says more than 130,000 Syrian Kurds have crossed the border fleeing Islamic State militants.
The Turkish government have closed a number of border posts in a bid to reduce the influx of refugees.
The Turkish government has closed many of its border posts with Syria to stop huge numbers of Kurdish refugees entering the country.
There are also reports that Turkey wants to stop Kurds crossing into Syria to join the fight against Islamic State (IS) militants.
There were clashes between Turkish security forces and Kurdish protesters, with two people said to have been hospitalised.
Around 100,000 refugees have crossed into Turkey since the middle of last week as they flee the advance of IS.
The number of Syrians who have crossed the border into Turkey to escape Islamic State militants has reached 100,000, Turkiish authorities have said.
A majority of them are Syrian Kurds, and their arrival since last Thursday has pushed Syria's violent internal conflict dangerously close to the Turkish frontier.
Islamic State militants has in recent days advanced into Kurdish regions of Syria that border Turkey, where fleeing refugees reported atrocities that included stonings, beheadings and the torching of homes.
Over 60,000 refugees, mainly Syrian Kurds, have fled across the border into Turkey this weekend, Turkish authorities have said.
Some 66,000 fled violence in their homeland in less than 24 hours after Turkey opened its border to Syrians fleeing the town of Kobane in fear of an Islamic State assault.
In some places along the frontier Turkish police clashed with protesters and aid workers trying to help the refugees from Syria's bloody civil war.
About 45,000 Syrian Kurds have crossed the border into Turkey after an advance by Islamic State militants, the Turkish Deputy Prime Minister has said.
"Around 45,000 Syrian Kurds have crossed the border as of now from eight entrance points along a 30 km distance from Akcakale to Mursitpinar since we opened the border yesterday," Numan Kurtulmus told CNN Turk television.
Forty-nine Turkish hostages captured by Islamic State militants in the Iraqi city of Mosul in June have all been released, Turkish Prime Minister Ahmet Davutoglu said.