VISAKHAPATNAM: The National Investigation Agency (NIA) has started probe into the murder of ruling TDP MLA Kidari Sarveswara Rao of Araku Assembly Constituency and former MLA Siveri Soma of Araku. A large number of Maoists, including plainclothes persons, surrounded the vehicles and kllled them.“NIA has taken the case for probe. The AP police has not asked for their probe. They have also taken away some accused. But cops are not confirming it..