Led by ACC Deputy Director Zahirul Huda, the team entered the Dhanmondi residence of Tarique's in-laws at 3:45pm and after around two hours left with photocopies of some property documents.

Besides quizzing Zubaida Rahman Khan, wife of the detained son of former premier Khaleda Zia, and her mother Iqbal Mand Banu, they examined the documents of Zubaida's property, and bank statements.

Major Redwanur Rahman, National Board of Revenue (NBR) Deputy Commissioner (income tax) Abdus Samad Al Azad and Criminal Investigation Department (CID) official Captain Zinia are the other members of the team.

Tarique, BNP Senior Joint Secretary General, submitted his wealth statement to the anti-graft body on June 10. There, he mentioned that his wife has inherited huge wealth from her parents.

Asked about the interrogation, Zahirul said the details could not be disclosed for the sake of fair investigation.

"We asked Tarique's wife and mother-in-law about the wealth statement that was submitted to the ACC. Nothing more can I disclose at the moment," he told the reporters, coming out of the house No. 80 on Road No. 5.

Advocate Ahmed Aazam Khan, one of Tarique's lawyers, said the taskforce members came to examine the documents of Zubaida Khan, especially the five houses that she co-owns with others.