The robbers, numbering about 10, barged into a sleeper coach of the running train and looted Rs. 50,000 in cash and other valuables at gun point from 16 to 17 passengers at about 0030 hours, Jhajha GRP Station House Officer Shashibhushan Chaudhary said.
The robbers pulled the chain of the train to bring it to a halt before making good their escape near Khatauna halt, he said.
A case has been registered at Jhajha GRP on the basis of the complaint of the passengers, Chaudhary said, adding an investigation was underway in the matter.