Delhi Police have sharply intensified both digital and physical surveillance efforts after the devastating car bomb blast near the Red Fort on Monday night, which killed 13 people and injured several others. As investigations widen, authorities are using an extensive combination of social media monitoring, CCTV analysis and coordinated field operations to track down leads and prevent any further threats.

According to police sources, multiple specialised monitoring teams are now working round-the-clock to analyse public online activity. These units are scanning posts, comments, discussions, videos and interactions on major social media platforms to detect signs of radicalisation, misinformation, provocation or any suspicious digital footprint that may point to individuals connected to the blast or to broader networks.

A senior police officer said that information emerging from these digital surveillance teams is being immediately forwarded to field units for verification and action. The priority, officials emphasised, is to ensure that even small online clues are not overlooked. “Dedicated teams are assessing what people are posting or discussing online. Any suspicious activity or potential lead related to the blast will be flagged without delay,” the officer said.

Parallel to this, all district police units have been instructed to maintain heightened vigilance on the ground. Officers at every police station level are reviewing CCTV feeds from markets, busy transit routes, border checkpoints and areas housing sensitive installations. Senior officials have ordered that any unusual movement or suspicious behaviour be reported to the control room without delay. Patrols, pickets and deployment of quick-response teams have also been increased across the city as an added precaution.

“CCTV surveillance and social media monitoring are being undertaken simultaneously to ensure no clue is missed,” another senior officer said, stressing that the investigation is moving forward on multiple fronts.

Meanwhile, probe agencies are exploring the possibility that Monday’s blast may be linked to a series of coordinated attacks planned across four Indian cities. Investigators believe the suspects may be part of what they describe as an interstate “white-collar terror module,” a network that operates with professional precision, financial resources and sophisticated technology.

A major breakthrough in the case has come from tracking the movements of Dr Umar Nabi, the prime suspect who drove the explosive-laden Hyundai i20 to the Red Fort site. Using footage captured from more than 50 CCTV cameras, police have attempted to reconstruct his route and identify every touchpoint before the explosion.

According to investigators, Dr Umar Nabi and his two associates—Dr Muzammil Ahmad Ganaie and Dr Shaheen Shahid—were allegedly using encrypted communication apps to evade detection. Police sources also revealed that the trio had pooled more than ₹26 lakh in cash and procured approximately 26 quintals of NPK fertiliser, a material commonly used in the construction of improvised explosive devices (IEDs). This procurement, combined with the suspects’ movements and encrypted communication patterns, has become a crucial part of the ongoing investigation.

As the probe continues, agencies remain on high alert, working to determine whether the Red Fort blast was an isolated act or part of a much larger conspiracy. The intensified surveillance—both online and through the city’s camera network—reflects the urgency with which authorities are pursuing every possible lead to ensure public safety and unravel the full scale of the terror module that may be operating behind the scenes.