Watch: CCTV shows people running in panic as Lal Quila Metro Station shakes during Red Fort car blast

NEW DELHI: New CCTV visuals from inside Lal Quila Metro Station reveal the underground station shaking and commuters running in panic during the car blast near the Red Fort on November 10, which killed 13 people and injured several others.

Delhi Police have stepped up digital surveillance, closely monitoring social media platforms to track conversations, reactions, and potential leads related to the Red Fort blast, officials said on Friday.

Multiple specialised teams are working round-the-clock to scan posts, comments, videos, and online discussions to identify signs of radicalisation, misinformation, provocation, or any suspicious activity emerging in the aftermath of the blast, a source added.A senior officer stated that intelligence collected by these social media monitoring units will be promptly shared with field teams for verification and appropriate action.The Delhi Police Special Cell has filed a fresh FIR to probe what it claims was a “deeper conspiracy” behind the attack. While the first FIR, registered under the Unlawful Activities (Prevention) Act (UAPA), was transferred to the National Investigation Agency (NIA), the Special Cell’s FIR invokes sections of criminal conspiracy and reportedly aims to make arrests soon.

Explosive experts are yet to provide a full analysis of the device, but initial reports suggest that Umar Un Nabi, who was driving the car at the time of the explosion, may have used military-grade explosives. Investigators traced his movements using CCTV footage: while travelling on the Delhi-Mumbai Expressway, he stopped near a dhaba but did not eat, slept in his car, and on the day of the blast, briefly stopped at a shop in Wazirpur for tea without interacting with anyone.The investigation has also spotlighted a so-called “doctor module” allegedly linked to the blast. Two doctors were detained from Haryana’s Nuh district — one an MBBS graduate from China who recently completed an internship at Al-Falah University, and another also associated with the university. In the past week, five suspects, including three MBBS doctors, a fertiliser vendor, and an imam, were taken into custody from Nuh, previously known as Mewat.

Suspicious numbers on their mobile phones, including some from Pakistan and Gulf countries, are being scrutinized.Sources suggest that ammonium nitrate, possibly used in the blast, was procured from Nuh, where Umar and his colleague Muzammil were reportedly present on multiple occasions. The doctor module reportedly used sophisticated spycraft techniques, such as drafting emails in shared accounts without sending them, using the Threema messaging app (which operates without phone numbers or emails), and possibly creating private servers to exchange maps and locations.