The discovery of skeletal remains of several children in a drain behind a Noida house where Koli worked as a domestic aide exposed a series of murders.
Police seized 2,900 kg of explosive materials and weapons in Faridabad, prompting raids at Al-Falah University. The NIA has joined the probe as doctors linked to the institution face interrogation over alleged terror connections.
Many anticipated that Prime Minister Narendra Modi would postpone or cancel his planned trip to Bhutan after learning of the blast in Delhi. However, he boarded his aircraft as scheduled early the following morning. This may have appeared disconnected to some, but it was actually a planned crisis leadership exercise that avoided what experts in international decision-making refer to as "policy paralysis by shock."
Over 360 kg of explosives and an assault rifle were recovered from his room. Four kilometres away, in Fatehpur Taga village, 2,563 kg of suspected ammonium nitrate was recovered from the home of a Maulana.
The Delhi Police is conducting raids at multiple locations. The national capital has been put on high alert with strict vigil being maintained at the airport, railway stations and bus terminals.