Odisha Police, however, ruled out involvement of Naxals in the Hirakhand mishap.
Railways suspect that tampering of the track near Kuneru station led to the derailment of the train.
Controversial self-styled 'godman' Sarathi Baba was on Saturday arrested by Odisha police on cheating and other charges following violent protests demanding action against him for his alleged escapades.
CBI has registered three FIRs in West Bengal against Saradha group and 44 FIRs in Odisha against chit fund companies allegedly operating on the lines of Saradha.
Central Bureau of Investigation on Wednesday registered a record number of 46 cases in a day in connection with its probe in the Rs 10,000-crore Saradha chit fund scam naming Trinamool Congress' sitting Rajya Sabha MP Kunal Ghosh as one of the accused.
Rifleman Aurangzeb, who belonged to the 44 Rashtriya Rifles, was on way back home on June 14 to celebrate Eid when terrorists abducted him.
73-year-old dies in Mumbai, 75-year-old in Kerala.
Two suspected operatives of Al Qaeda have been arrested in New Delhi and Odisha and Delhi Police on Wednesday claimed to have busted a module of the terror group's Indian sub-continent wing operating out of the country.