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Delhi Blast Probe Tracks Threema Use, Eyes Suspected Private Server

Investigators are zeroing in on Threema’s anonymized network to locate a server believed to have carried maps and instructions.

Overview

  • Police say three Faridabad-based doctors linked to Al Falah University used the Swiss encrypted app Threema to coordinate planning for the Red Fort car blast.
  • Forensic teams are examining metadata from the suspects’ Threema chats and are working to determine whether a suspected private server was hosted in India or abroad.
  • Investigators report seizing a red EcoSport allegedly used to transport and stockpile ammonium nitrate, with about 32 cars found to have been prepared for potential attacks.
  • The death toll from Monday’s explosion rose to 13 on Thursday, with additional victims still receiving treatment, according to officials.
  • Threema was blocked in India in May 2023 under Section 69A, and reports indicate the suspects accessed the app while abroad and likely relied on VPNs to use it domestically.