In another arrest in the Samjhauta express blast case, the National Investigation Agency, NIA has taken into custody an Indore-based man for his alleged role in the 2007 train attack.

The arrest of Kamal Chouhan, believed to be a close aide of Ramji Kalsangra and Sandeep Dange, key accused in the case, came after he was asked to appear before the NIA headquarters in New Delhi. Earlier, summons were served at his home at Depalpur Tehsil in Indore, Madhya Pradesh.

Official sources said, intense questioning of the accused is underway to ascertain the whereabouts of Sange and Kalsangra, on whom the agency has announced a cash reward of Rs 10 lakh.

The NIA has already charged Swami Aseemanand, Sadhvi Pragya, Sunil Joshi, Sandeep Dange, Lokesh Sharma and Ramchandra Kalasangra alias Ramji for triggering the explosions in the Samjhauta Express on February 2007 in which 68 people were killed.