A gang of robbers on Friday midnight attempted to loot passengers in the Hyderabad-bound Narayanadri Express, in the Prakasam district.
As the train was passing through the Prakasam district, some unidentified persons in the train stopped it by pulling the chain between the Raparla and Uppugunduru railway stations. The men then attempted to loot the passengers of their cash and gold ornaments in bogies S3 and S13.
Alerted by the commotion, the security personnel fired three rounds in the air. With this the robbers jumped off the bogies and disappeared.
The train was heading towards Secunderabad from Tirupati.
Upon receipt of the information, Railway senior authorities ordered an inquiry into the incident.