Part of a nuclear plant in the United States has been shut down after what the operating company says is a transformer failure and fire.
The company, Entergy Corp, has said on a Twitter message that the Indian Point plant in New York State was stable and there was no danger to the public or employees.
Indian Point safely shut down following transformer failure outside of nuclear side of plant; No danger to public health and safety.— Indian Point Energy (@Indian_Point) May 9, 2015
Several people tweeted from nearby that they saw a big explosion.
The company later announced a fire in the transformer of the plant's number three unit had been put out and there was no damage to the nuclear reactor.
It said the rest of the plant was continuing to operate.
The police said several emergency calls reported a loud noise at the plant, which is located about 65 kilometres north of New York City.
There have also been reports that, at one point, smoke could be seen rising from the plant.
The US Nuclear Regulatory Commission said the fire was quickly put out and the plant responded as designed .
The plant, whose origin dates back to the 1960s, has long been controversial because of its proximity to New York.