A passenger, allegedly impersonating as a senior railway official, was on Friday arrested in New Delhi immediately after his arrival from Kolkata by Sealdah Duronto express.
Acting on a tip-off by the train's staff, he was apprehended by a joint team of Railways vigilance wing, RPF and GRP.
A sum of Rs 10.20 lakh and a few ATM cards were recovered from his possession.
He was carrying an authority card issued by the Railways for travel in First AC with the name Hitesh Khanna, said an RPF personnel.
His PAN card, however, showed his name as AK Singh, he said.
An enquiry has been launched to ascertain his actual identity and the source of the money recovered from him.
The person claimed he was the director, traffic commercial, Railway Board and boarded the train from Sealdah station by showing the card. He also displayed the bronze pass to establish his claim, said train Manager D C Pandey.
"However, since there are no provisions of claiming berths against any railway pass in Duronto trains, we became suspicious and got in touch with the Railway Board.
"He turned out to be an impersonator. We kept a strict vigil on him and during further grilling, we found several discrepancies in his claims. At one point, he changed his version and said he was a senior officer of Northern Railway," Pandey said.