Firefighters searched the area for increased levels of carbon monoxide, the New York Fire Department said. Officials have not yet confirmed the type of manhole covers – gas, water, sewer or subway – that caught fire. Two manhole covers were damaged and the cause was cable failure, according to Karl-Erik Stromsta, a spokesman for power company Con Edison. One of the two was part of an explosion, Stromsta said, while the other was found smoking. There were no reports of injuries or injuries to customers, he said.
