Red Fort blast probe: After associate Muzammil’s arrest, Umar went to Nuh, returned only hours before blast

According to CCTV camera footage, Umar returned to Delhi only in the early hours of Monday. The i20 could be seen at the Firozepur Jhirka toll plaza in Nuh, at 1.36 am.

The car then entered Delhi and in the evening, exploded outside the Red Fort.

Sources in the police further revealed that relations between Muzammil and Umar – doctors at School of Medical Sciences and Research Centre at Al Falah University in Dhauj – had soured after a monetary dispute, and the two began operating separately.

“Before this, they were regularly in touch,” a source said.

The probe, meanwhile, has revealed that Umar travelled to Kashmir on October 18 and returned to Delhi on October 24.

“It was his last visit to Kashmir. One of the police teams, headed by a DCP-rank officer in Jammu and Kashmir, is trying to ascertain the exact motive of his visit,” a source said.

“It has also come to light that before going to Kashmir, he was using two mobile phones, which he left there and then returned to Delhi,” the source added.

Multiple teams of Delhi Police Special Cell have been assigned specific tasks, including only profiling all the students of Al Falah University, said police.

“While one of the teams has been asked to profile all the students of Al Falah University, another team has been asked to check the IPDR (Internet Protocol Detail Record) details of Umar’s phones and ascertain where he was hiding in Nuh,” a source said.

Meanwhile, samples of the DNA of the mother of Umar have been matched with samples from the unidentified bodies that were brought to Lok Nayak Hospital from the site of the explosion, sources said. Investigators rely on DNA profiling to identify suspects or victims when bodies are physically unrecognisable.

“The DNA samples from Umar’s mother were collected from Pulwama, and brought to Delhi to be matched with unidentified bodies,” said a source.

“The DNA samples have been matched, and further details will be examined later,” said a source in the All India Institute of Medical Sciences in Delhi.