Invalid notes worth Rs 42 lakh was recovered by the Government Railway Police during surveillance in the down Diamond Express at Burdwan Station on Wednesday night.
One Siddhartha Samanta was detained when he was travelling in the train with the money.
Police had received a tip-off that there will be an attempt to take a huge amount of invalid money in the train.
Police said that the person had failed to give any satisfactory answer when asked that where he was taking the money.
The person was travelling in a general compartment. Police found the man trying to hide his bag under a seat finding the police getting onto the train and it led to their suspicion. The police asked the man to open the bag show what he was carrying in it.
Police found demonetised Rs 500 and Rs 1,000 notes in the bag. The notes were covered with a bed sheet and the man had allegedly tried to make the police believe that there were clothes in the bag. But police forced him to remove the bed-sheet and found the notes.
They took him to the nearest GRP and questioned him. He had claimed that he works for a rice trader Balraj Debralia, who is a resident of Jharkhand, and he also owns a wholesale shop at Badamtala in Burdwan. Samanta claimed that he gets Rs 10,000 from his employer as salary and he was caught while returning after collecting the due amounts from some of their customers in Dhanbad and Jharia.