Turkish police used gas bombs and water cannons to disperse about 5,000 protesters in the Central Anatolian province of Eskisehir, officials said.
A U.N. human rights official said Tuesday the situation in Turkey, where development in a park was a flashpoint for wider unrest, remains "highly combustible."
Seven workers were killed in Turkey when they fell into a pool of sewage and succumbed to methane gas poisoning, emergency workers said.
Nearly 50 percent of the Turkish public believe their government is becoming more authoritarian and repressive, a poll indicates.
As Turkey faced mounting criticism from the European Union over its handling of protests in Istanbul, Turkish unions went on strike Monday.
About 2,000 people have joined the terrorist Kurdistan Workers' Party in the past three months, amid an agreement to end to terrorism in Turkey, officials say.
Turkish Prime Minister Recep Tayyip Erdogan met Wednesday with leaders of the protests that have roiled Istanbul for more than two weeks, officials said.
Turkish riot police used water cannons and fired tear gas at protesters in Istanbul's Taksim Square Tuesday to disperse the gathering, officials said.
A top European Union official is criticizing Turkish police for what he calls excessive use of force during protests as Turkey pushes for membership in the EU.
The Turkish government and demonstrators are called on to ensure the rule of law is observed carefully during ongoing protests, the United Nations said.