A 61-year-old security guard has died and a woman has been charged with assault after an incident at Asda in Arbroath.
Several police vehicles and two ambulances were called to the supermarket just before 7.30pm on Sunday.
The store was taped off overnight as police carried out an investigation.
Police have now confirmed a man who was working as a security guard died at the scene.
His death is being treated as “unexplained”.
Security guard, 61, dies at Arbroath Asda as police probe ‘unexplained’ death
A spokesperson said: “Around 7.25pm on Sunday, we were called to a report of an unresponsive man within a supermarket in Westway Retail Park, Arbroath.
“Emergency services attended and a 61-year-old man was pronounced dead at the scene.
“The death is being treated as unexplained at this time and a post-mortem examination will be carried out in due course.
“A 37-year-old woman has been arrested and charged in connection with an assault.
“She is due to appear at Forfar Sheriff Court on Tuesday.”
One man who saw emergency services at the scene said: “I first became aware of it at about 8pm on Sunday.
“Police had shut down the Asda, there was an ambulance, a doctor’s vehicle and a lot of police cars.
“There were officers going in and out of the shop.
“There were also a few members of the public watching what was going on.
“One police car was as far up as B&Q and they had also closed the petrol station.
“To me, it looked like a really big incident.”
Police were also carrying out activity at the goods entrance at the back of the store on Monday.
Arbroath woman Yvonne Dunne said she was turned away early on Monday morning.
The 73-year-old said: “I wasn’t aware of what’s happened till I arrived at the store.
“I’d just come down for medicine for my granddaughter and a few bits and pieces.
“The officer told me the store was shut and there is tape around the store.
Shock as guard dies at Arbroath Asda
“There are usually police at the retail park but nothing like this.
“It’s awful to hear what has happened.”
Another woman who turned up at the supermarket on Monday told of her shock.
The 30-year-old said: “I’ve come down from Carnoustie to shop and had no idea what happened until I arrived.
“I’m shocked to hear what’s happened, that poor man, it’s awful to hear.”
Another shopper, 71, said: “We were aware something had happened from online community pages last night.
“A lot of folk down at the retail park were speaking about it.
“You don’t usually see this type of thing in the town.”
A spokesperson for Asda said it was a matter for police.