EDF Energy, which owns the Hartlepool Nuclear power station has released a statement after a "small fire" at the plant last night.
More than 10 fire engines attended the scene of the plant near Seaton Carew.
In a stament EDF Energy has confirmed there was a fire but says "there is no threat to the public or staff".
"EDF Energy confirms that at around 18:30 on 20 April a small fire was detected in the turbine hall of unit 2 at Hartlepool power station.
"The fire was quickly brought under control and any residual smouldering extinguished at 19:53.
"There were no injuries as a result of this incident and there is no threat to the public or staff.
"Unit 1 at the power station continues to operate normally."
More top news
Science Museum Group will loan Stephenson’s Rocket, one of Britain’s most iconic feats of engineering, to the Great Exhibition of the North.
The family of a Seaham soldier who died at Deepcut barracks has been given the go-ahead to apply for a fresh inquest.
Cleveland Police said they were looking for a young girl spotted walking along the Coast Road in Redcar on Friday morning.