Police have drawn a blank in their investigation into who sent a letter threatening to burn down a council leader's house.The hand-written threat, with a match attached, was posted to the home of leader of Harborough District Council Blake Pain in AprilIt followed two other threatening letters which were sent to Harborough District Council a few weeks earlier.The two letters were sent after the authority's planning committee approved controversial plans for 1,500 homes on the outskirts of Market...
