A former RAF serviceman jailed for sexually abusing six young girls over almost half a century has died of suspected coronavirus in prison.Gordon Pinkerton, of Aberdeen, was locked up for 15 years in 2013 for preying on schoolchildren across Scotland and raping two youngsters when they were just six years old.The Scottish Prison Service confirmed the 76-year-old was a prisoner at HMP Dumfries when he died.A source told the Record the child rapist died after contracting suspected Covid-19, making him the fourth Scottish prisoner suspected to have died from the virus.Pinkerton was jailed at the High Court in Glasgow for the abuse, which began in 1963 and continued until 2011.He turned up at the family home of one of his victims dressed in his