Turkish police have detained hundreds of workers protesting over labour conditions at Istanbul's new airport, a giant project championed by President Tayyip Erdogan and due to open next month, a union leader said on Saturday.
The protest broke out after a shuttle bus accident on Friday in which 17 workers were injured, said Ozgur Karabulut, general manager of the Dev Yapi-Is union.
Thousands of workers joined the demonstration, which was broken up by police and gendarmes deploying in riot control vehicles and firing tear gas, he said.