Officials said that the incident was reported from the Vaishali station in Ghaziabad at about 10 am when a CISF security personnel, during X-ray screening of the baggage, detected the weapon and the single round ammunition, loaded in the pistol chamber.
The duo, identified as Ashish Kumar and Rakesh Yadav, were travelling together and denied having any idea about the presence of weapon in the bag, they said.
Arms and ammunition are banned from being taken inside the Delhi Metro and such instances are punishable under law.