Colombo, April 1 ( /Sputnik) Colombo, the biggest city of Sri Lanka has imposed a curfew over the ongoing protests and riots near the presidential palace, reports in the media said. According to the Colombo Gazette news outlet, the protesters gathered near the presidential palace demanding the resignation of President Gotabaya Rajapaksa. Police had to resort to tear gas whereas the protesters set on fire a bus that blocked the road to the palace. The city police have decided to impose a curfew in the central, northern and southern parts of the city. Sri Lanka is facing a wave of protests over the poor economic situation in the country, price rise, prolonged power cuts and growing scarcity of essential commodities. /SPUTNIK VP RKM