ARMED police have cordoned off an area in Blackheath this afternoon after unconfirmed reports of an explosion at a Sainsbury’s supermarket in the town.
The police confirmed that a man, wielding a knife, was also on scene and has been arrested.
Police helicopters were dispatched above the area on Halesowen Street to carry out investigations.
According to the Express and Star newspaper, the supermarket in Blackheath has been evacuated and a cordon has been put in place.
West Midlands police said: “Officers were called to Sainsbury’s in Blackheath at around 12:10pm to reports of a man with a knife.
“An area search was conducted and a man was detained by officers.
“The store has been evacuated and the following roads have been closed, Halesowen Street, John Street and Union Street.
“No injuries have been reported to us.
“Drivers are advised to avoid the area at this time.”
Shoppers were told to leave the shop, but many are stranded as they have their cars in the car park.
One eyewitness told the Express and Star that she “heard a bang” from the toilet area in the supermarket and saw smoke.
Staff then told everyone to get out.
One eyewitness said: Everyone was shouting ‘get out, run.”