Theories suggesting a political conspiracy in the Darbha Ghati massacre, where Naxals killed 29 people from a Congress cavalcade have not yet been ruled out by the National Investigation Agency (NIA) which is investigating the attack. The agency has even put a 'padayatra' that  former Chhattisgarh CM Ajit Jogi's son Amit Jogi embarked upon some three years ago in Bastar under scanner.  Read