Not Telegram, WhatsApp, Dr Muzammil, Dr Umar used this 'secret' app to chat with foreign handler to plot Delhi Red Fort blast

Two days after the devastating Delhi car blast that killed 13 people, the probe agencies have uncovered the key suspect Dr Muzammil and Dr Umar, the man behind wheels of Hyundai i20 car that exploded, were in contact with their Turkey handlers through a 'secre