A pensioner arrested after a man was shot dead has been charged with a firearms offence, police said. Reuben Gregory was initially held on suspicion of murder after Wayne Digby, 48, died during an alleged break-in at the caravan the 72-year-old shared with his sister Kathleen on June 12. Police found Mr Digby's body after they were called to the secluded site next to Slough's Colnbrook Bypass, a short distance from Heathrow Airport, in the early hours of the morning. A post-mortem examination later revealed he died from a shotgun wound to the abdomen, Thames Valley Police said at the time. Gregory has been charged with having a shotgun without a certificate, the force said on Monday. He is due to appear at Slough Magistrates' Court on September 18.