Guwahati, Oct. 24 -- Police have registered an FIR against unidentified persons after two posters questioning the government's performance were discovered inside a train on the Delhi Metro's Airport Express Line.

The sheets also listed nine claims about changes in the country in recent years and included a QR code inviting people to join an online group, police sources said.

The incident was reported on October 20 by Tarun Chaudhary, a Delhi Metro Rail Corporation (DMRC) train operator posted on the Airport Express Line.

According to the FIR, he found the posters while inspecting a train he had operated from New Delhi station to Yashobhoomi.

The train left New Delhi at around 6.50 pm and reached Yashobhoomi at approximately 7.15 pm. D...