Fire crews have been called to the Sainsbury's supermarket in Grimsby.
There was a fire in the roof of the building, caused by an electrical fault at around 1.15pm.
Two fire engines attended and customers and staff were evacuated. Officials say the store will be closed until around 3pm.
More to follow.
Possible Fire in #sainsburysgrimsby customers & staff evacuated. #grimsby#shoppingpic.twitter.com/AWH47fb81n
— Lucie Ramsden (@lucieramsden) July 17, 2014