Kevin "Gerbil" Carroll was blasted five times in the back of the head as he sat in a car, yards from the main door while shoppers looked on.Detectives fear Glasgow's turf war between the Daniels and the Lyons will now escalate into a spate of revenge attacks.A police source said: "Gerbil was a big name and his killing is a huge deal.
"The fact the shooters were brazen enough to do it at lunchtime in a supermarket
"It's doubtful that the Daniels will let this lie and it's likely to mean dangerous times ahead."Carroll was sitting with three cronies in a black Audi car when he met his death just before 1.30pm in Robroyston, Glasgow.It is understood two handguns were used and police were last night hunting three men.The gunmen sped off in a dark-coloured car and would have been able to make a quick getaway on to the M80.Armed officers sealed off the car park. within minutes and shoppers were told to stay inside the store or in their cars.Stunned ASDA workers looked down on the murder scene from the first-floor staff canteen.The car in which Carroll was sitting was covered with a white tent as forensics experts combed the scene.An underworld source said Carroll, 29, was lured to his death under the pretence of a meeting with associates.Carroll, 29, was a key player in the Daniel vs Lyons feud which has resulted in countless shootings, slashings and fire attacks.Detectives were convinced he was behind a recent string of savage kidnappings.The thugs responsible were known as the Alien Abduction Gang because their traumatised victims told police they could not remember anything.It is thought the hit on Carroll may have been retribution for one of the kidnappings.Detective Superintendent Michael Orr said yesterday: "A man has been shot in broad daylight in a very public place. It is imperative that we trace those responsible who have no regard for public safety.
"We believe the victim was the intended target. However, I would like to reassure the public that a high police presence will be maintained in the area and ext ra resources will be deployed to trace the suspects."Carroll's on-off partner was Kelly Green, daughter of crime clan boss Jamie Daniel.Six years ago, Carroll was shot as the Daniel-Lyons feud erupted.The spat between the Lyons and Daniels is thought to have been reignited in November 2006 when the grave of eight-year-old leukaemia victim Garry Lyons was vandalised. He was the son of clan boss Eddie Lyons.
That year, Carroll survived a second shooting when he and pal Ross Sherlock were gunned down in Auchinairn, Bishopbriggs, East Dunbartonshire.He was also linked with the triple shooting in which Michael Lyons was killed at Apple Row motors in Lambhill, Glasgow, that December.Carroll admitted one charge relating to the stolen Army weapons and ammo used and was jailed for 18 months.In September last year, Strathclyde's Gangs Task Force seized £4000 from Carroll - also known as McCabe - in Maryhill, Glasgow.Yesterday, more than 50 officers were dispatched the murder scene. A force helicopter hovered above the scene and staff and shoppers and were kept within the cordon until around 5pm.Police were last night studying CCTV footage.
In a statement on ASDA's Twitter site yesterday a company spokesman said: "We're sorry to say there's been a fatal shooting incident outside our store in Robroyston, Glasgow, this afternoon.

"We don't know the full details yet, but the police are in charge and are dealing with the situation and we're helping with their investigation."

The shooting is believed to be the first fatal gangland hit in daylight since drug baron Jim McDonald was gunned down in Cardonald, Glasgow, in May 2007.