Mr Grainger's body was found by Greater Manchester firefighters as they tackled a blaze shortly after 5am in Wellington Street, near the Gala Casino. The 32-year-old's decapitated corpse, which is also thought to have suffered burns injuries, was found in the street - with his head nearby. A post-mortem examination has now concluded that Mr Grainger died from a blunt force head injury and a 'shotgun wound to the head'. John Grainger's decapitated body was discovered on a grass verge (Picture: PA) Two men, aged 29 and 31, are being held at a Greater Manchester police station, where they are still being quizzed on the circumstances surrounding the discovery. Police have said they were initially arrested on suspicion of possessing shotgun cartridges, before the body was found.. Superintendent Pete Matthews, from Greater Manchester Police, said: 'We have a team of dedicated detectives who are working hard to establish the exact circumstances surrounding John's death, so we can provide his family with some much-needed answers. 'We will be continuing with our inquiries and speaking to local residents. 'We also have extra officers in the area to offer reassurance and assist with the investigation.'
