Edinburgh mum Diana Meacock was horrified when her son Ollie made the discovery near their local Scotmid shop in Portobello.The child was on a playdate with a friend when they found the weapon near Bath Street.Diana, 25, says her son came running out of the bushes upset after finding the dangerous blade.She told Edinburgh Live: "We were out with one of his friends and we stopped at the shop for a juice and a snack.