London: The sister of an Indian-origin Islamic State terror suspect dubbed "New Jihadi John" today said she is hoping that the masked man in a recent video of the terror group is not her brother and her family was in the dark about how he developed increasingly radical views.

Konika Dhar appeared before a House of Commons Home Affairs Committee hearing over the possibility of her brother Siddhartha Dhar being the masked man who recently appeared in an ISIS propaganda video which showed "British spies" being executed.