Srinagar, Nov. 12 -- Jammu and Kashmir Police have detained many persons including the parents of Dr Umar Nabi, the prime suspect in the New Delhi blast, from south Kashmir's Pulwama district.Sources said the mother and father and two brothers of Dr Umar were picked up by police from his Pulwama residence.While his mother and two brothers were detained by police yesterday evening, his father was picked up by police today afternoon.Sources said the mother and father of the Delhi blast suspect have been picked up for DNA testing.The samples will be matched with bodies lying at a Delhi hospital to determine whether Umar was killed in the explosion or remains at large.According to police, Umar was part of a terror module and went into hiding ...