Sri Lankan police used tear gas and water cannons on Saturday to disperse hundreds of stone-throwing demonstrators protesting a planned investment zone supported by China.
Hospital authorities said at least 21 people were injured in the protests. According to police, 52 demonstrators were arrested.
Protesters say that the government of President Maithripala Sirisena is trying to evict thousands of families to provide 15,000 acres (6,070 hectares) of land in the projected industrial zone for Chinese investors.