New Delhi: The National Investigation Agency (NIA) on Sunday arrested the vice president of the Telangana Praja Front (TPF) for allegedly aiding the illegal activities of the CPI (Maoist), an official said.Nalamasa Krishna, 41, was arrested from Khammam district of Telangana.Krishna, a resident of Hyderabad and the vice president of the TPF, had played a key role in supporting and furthering the activities of the CPI (Maoist), he said.The case was originally registered on October 8 last year in Hyderabad based on the seizure of “incriminating documents and material” from the residence of Maddileti alias Bandari Maddileti, the president of the Telangana Vidyarthi Vedika (TVV).Later, the NIA took over the case.Krishna regularly visited the top leaders of the CPI (Maoist) in the forests of Chhattisgarh and passed on their directions to Maddileti, the NIA official claimed.He was instrumental in directing the frontal organisations like TPF, TVV and others to take up various agitations and activities as per the CPI (Maoist) strategy, the official said.Further investigation in the case is underway, he added.