Two top ULFA leaders, picked up from the Indo-Bangla border in Tripura, were today remanded in police custody for 10 days by a court in Guwahati . Additional Director General of Assam Police Khagen Sarma said the duo is being questioned. Bangladesh has launched a major crackdown on ULFA militants operating from its soil by apprehending the two and subsequently pushing them into Indian territory from where BSF took the duo into custody.