Nirbhaya case convict Mukesh Singh has moved the Supreme Court challenging rejection of his mercy plea by President Ram Nath Kovind. President Ram Nath Kovind had rejected the mercy petition of convict Mukesh in the Nirbhaya gangrape case on January 17. The hanging of all four convicts in the case is to take place on February 1 at 6-am, according to the court order.