BOSTON (Reuters) - At least two Boston firefighters were injured on Wednesday when a fire broke out in a four-story building in the city's historic Back Bay neighborhood, drawing a large-scale emergency response, local officials said.

Boston's Fire Department described the blaze as a nine-alarm incident, while the city's emergency medical services reported that two firefighters required medical treatment.

Live television video showed a huge plume of smoke rising from the building, hanging over the city.

(Reporting by Scott Malone; editing by Gunna Dickson)