Suspects used encrypted Swiss app, zigzag routes

Dr Umar Nabi drove the explosives-laden car; his movements indicate meticulous planning and deliberate attempts to avoid detection

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Using footage from more than 50 CCTV cameras, Delhi Police has reconstructed Dr Umar Nabi’s last hours, right from leaving Faridabad the night before the Red Fort blast to driving an explosives-laden car slowly towards the metro station the next evening, seconds before it blew up.

Investigators have also found that the three suspects — Dr Umar Un Nabi, Dr Muzammil Ahmad Ganaie, and Dr Shaheen Shahid — allegedly used a Switzerland-based encrypted messaging app to plan and coordinate their activities related to the terror conspiracy.