New Delhi, Apr 11 (ANI): A Delhi metro staffer was stabbed by unidentified men on Monday at the Rajender Nagar metro station in New Delhi. The attackers robbed him of Rs 12 lakh. The incident took place at around 5.30 am, when the attackers entered the metro station with a knife and targeted the control room. The security has been tightened at the station and the police are examining the CCTV footage to garner the further details.