The National Investigation Agency (NIA) has intensified its investigation into the bomb blast outside Delhi's Red Fort. The agency has conducted raids in various states and is examining the records of students and faculty associated with Al-Falah University. Following the emergence of a Ludhiana link, an NIA team conducted a raid in Bal Singh Nagar on November 13. The team raided the clinic of Dr. Jannisar Alam, an MBBS graduate from Al-Falah University, and found it closed. At the doctor's home near the clinic, the team questioned his father, Tohid Alam. According to the family, the doctor had been visiting relatives in Dalkhola, West Bengal, a few days ago. The NIA detained him there for questioning and released him in the evening after questioning him for a full day. The agency has seized his laptop and mobile phone and initiated an investigation. According to sources, Dr. Alam has been summoned to the NIA office in Delhi for further questioning today. Locals reported that the doctor's clinic had been closed for several days. His father was often the one who dispensed medication to patients. Dr. Alam's father, Tauheed Alam, said his son enrolled in MBBS in 2020 and completed his degree in 2025, now running a clinic in Ludhiana. The family has lived in Ludhiana since 1984, and their ancestral home is in Bengal. His son and family had gone to the village for a wedding. He said his son was preparing for his PG degree at AIIMS, which meant he was unable to devote much time to the clinic. The family said they were fully cooperating with the investigating agency and would assist in any action.