New Delhi, Oct. 27 -- A case has been registered after posters were allegedly pasted near Emergency Gate No. 5 and black ink was used to write on a shaft wall near Gate No. 7 at Shivaji Stadium Metro Station on October 24, Delhi Police sources said.

According to police sources, the IGI Airport Metro Police have booked an unidentified person under the Delhi Prevention of Defacement of Property Act and the Metro Railways Act in connection with the incident.

Further details are awaited.

Earlier, an FIR was registered against unidentified persons after two posters questioning the government's performance were found pasted inside a train on the Delhi Metro's Airport Express Line, Delhi Police said.

According to Delhi Police, the FIR has be...