br The family of Dr. Umar Mohammad, the suspected mastermind behind the deadly Delhi Red Fort car blast, has broken their silence. Speaking exclusively to the media, his sister-in-law expressed shock and disbelief over the terror allegations, insisting that Umar was a “simple, soft-spoken doctor” with no links to extremist activities. She revealed that the family last spoke to him days before the blast and had no idea about his whereabouts since then.