Umar Ul Nabi, a doctor who is alleged to be at the wheels of the car that exploded on November 10 near Red Fort in Delhi killing over a dozen people, is seen talking about the act of suicide bombing

Agencies investigate the Red Fort blast, tracing bomber's route, fertilizer purchases, and potential contacts among Kashmiri students.

The BBC spoke to the family of the man police allege was driving the car that exploded near Red Fort.

Umar Ul Nabi, a doctor who is alleged to be at the wheels of the car that exploded on November 10 near Red Fort in Delhi killing over a dozen people, is seen talking about the act…