SHAHJAHANPUR, Feb. 15 -- Police have registered a case against a man here for allegedly threatening to kill a BJP leader and former MLA on social media, officials said on Friday. Former MLA and BJP leader Sharadbir Singh alleged that Sarvendra Pratap Singh, from Mirzapur town of Jalalabad constituency, had threatened to kill him within three months on a Facebook post on February 12, police said....