November 13th 2025.
Three doctors from Faridabad's Al Falah University, who are currently being investigated for their involvement in the car explosion near the Red Fort on Monday evening, had been in constant communication through a secure Swiss messaging app called Threema, according to police officials. The three suspects, identified as Dr Umar Un Nabi, Dr Muzammil Ganaie, and Dr Shaheen Shahid, allegedly used this encrypted app to plan and coordinate their activities related to the terror conspiracy.
It is also suspected that Umar, who was driving the car that exploded, and his team had been using a red EcoSport car, which was found in Faridabad, to transport and store ammonium nitrate over a period of time. Sources have revealed that Umar, who is believed to be the most radicalized member of the group, had cut off all digital connections and turned off his phone after the arrest of his accomplices.
As of Thursday, the death toll from the blast has risen to 13 with another injured person succumbing to their injuries at the LNJP Hospital. The suspects had reportedly conducted multiple reconnaissance missions in the capital and were planning to carry out several serial blasts, awaiting orders from their handlers when they were apprehended.
In contrast to traditional messaging platforms, Threema does not require a phone number or email ID for registration, making it extremely difficult to trace the users, according to sources. Each user is assigned a unique ID that is not linked to any mobile number or SIM card, and the app offers end-to-end encryption with the option to be run on private servers.
Investigations have revealed that the accused doctors had set up a private Threema server to communicate securely and avoid detection. This server was allegedly used to share sensitive documents, maps, and layouts related to the Delhi blast conspiracy. Police sources have stated that the private network was used for detailed planning, including location sharing and task allocation.
The trio had primarily used the app for encrypted text chats, sharing documents and designs, and voice communication, instead of relying on standard mobile networks. In order to maintain additional secrecy, Threema allows messages to be deleted from both ends and does not store metadata, making it challenging for forensic retrieval, according to sources.
Authorities believe that this closed Threema network was crucial in the planning and coordination of the blast. They are currently working to determine whether the private server used by the group was hosted within India or abroad, and if other members of the module had access to it. Initial findings suggest that the app was used to transfer restricted material and coded messages among the members of the terror group.
Police have also discovered that approximately 32 cars were being prepared to carry out blasts near historical locations and important installations in the capital. While one car was used in the blast near the Red Fort, three others have been confiscated by the police so far. This incident has raised concerns about the security of the city and the need for increased measures to prevent such attacks from occurring in the future.
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