Lucknow, Dec. 2 -- A National Investigation Agency (NIA) team on Monday reached the parental residence of siblings Dr Shaheen Ansari and Dr Parvez Ansari at Khandari Bazar under the Qaiserbagh police station limits in Lucknow in connection with the probe into the recovery of 2,900 kg explosives from Faridabad last month and the November 10 Delhi blast case in which 15 people were killed and over 20 others injured.

The eight-member NIA team reached the house at around 5.30am and quizzed Dr Shaheen's father Shaheed Ansari, a former state health department employee and her elder brother Shoaib.

According to people familiar with the matter, they were questioned about Dr Shaheen and her brother Dr Parvez's visits to the house and when was th...