Two armed robbers who chased a man down a street before cornering him in a shop and threatening to "blow his head off" have been jailed.

Kevin Marshall, 31, of Baldovan Terrace, and Andrew King, 24, of Dens Road, both Dundee, pursued Douglas Laidlaw down Albert Street in the city, which was filled with pedestrians and motorists.

The pair first told the man, who claimed he did not know the two assailants, "you better get my money" before calling him the wrong name.

Their victim walked off before the pair again approached him minutes later and shouted: "I want my money, give me my money."

Dundee Sheriff Court was shown CCTV footage of the victim running into a nearby shop before the two attackers charged up to the door pointing the weapon at him through it.

Fiscal depute Eilidh Robertson told Dundee Sheriff Court that Marshall then pulled out "what looked like a handgun" and told Mr Laidlaw: "Get the f*****g money or I'll blow your head off."

She said: "Accused Marshall began to wave this gun at Mr Laidlaw through the pane of glass, whilst King gesticulated towards Mr Laidlaw and both continued to demand money from him.

"They were shouting at him and demanding that he leave the shop, with Accused Marshall shouting 'I'll f*****g blow your head off' or words to that effect."

Ballistics experts who examined CCTV of the incident on January 8 last year agreed the gun was likely an air pistol.

Marshall and King both pleaded guilty to a charge of attempted robbery. Marshall further admitted possessing a firearm on the same date.

Mr Brown imposed a six-year extended sentence on Marshall, with four years in custody and two years on licence.

King was jailed for three years and told he will be supervised in the community for a year upon his release.

Mr Brown said: "The presentation of a firearm or imitation firearm in any circumstances is a very serious matter.

"I saw the CCTV of what happened and there is a shopkeeper there who was simply trying to earn a living and providing a public service faced with Kevin Marshall waving a handgun at the door of his shop."