India, Nov. 16 -- Delhi Police suspect that the deadly blast near the Red Fort on November 10 may have involved Triacetone triperoxide (TATP), an extremely volatile explosive infamously called the "Mother of Satan."

Unlike conventional explosives such as ammonium nitrate, TATP can detonate from heat, friction, or pressure without a detonator, making it highly unstable.

The explosion, which killed 13 people and injured nearly two dozen, occurred when Umar Mohammad, a doctor allegedly linked to the Pakistan-based Jaish-e-Mohammed terror group, drove a Hyundai i20 into the crowded Chandni Chowk area.

Police are probing how Umar sourced the chemicals, whether others were involved in preparing the device, and how the explosive remained stab...