The first question of Rab (Rapid Action Battalion) interrogators to detained militant kingpin Abdur Rahman was on the whereabouts of another top militant Siddiqul Islam alias Bangla Bhai. "We started interrogating Rahman in the car in which he was brought to Dhaka, soon after a court placed him on remand. And you know, certainly whereabouts of Bangla Bhai was the first question," Director General (DG) of Rab MA Aziz Sarker said. When contacted over phone yesterday afternoon, he also said acting on information from Rahman, Rab personnel have seized a huge quantity of explosives from Hatilbagh of Shibganj in Sylhet. Rab was also raiding some areas in Habiganj. Aziz however declined to say what Rahman told them about Bangla Bhai. Asked whether Bangla Bhai is in the country, he refused to make any comment. But sources in intelligence agencies said Bangla Bhai and Rahman were