Sewage boat explosion kills New York City worker

US coast guard says accident occurred while employees were doing work involving a flame or sparks

An explosion on a boat carrying raw sewage that was docked on the Hudson River in New York City killed a longtime city employee, authorities said.

Another worker on the city-owned Hunts Point vessel was injured and taken to the hospital after the blast about 10.30am Saturday near the North River wastewater treatment plant, according to city deputy assistant chief David Simms of the fire department. A third worker refused medical treatment.