New Delhi, April 4 -- A National Investigation Agency (NIA) team from Delhi reached Kaliachak in Bengal's Malda on Friday following the Election Commission of India's orders to investigate the mob siege at a block development officer's (BDO) office the night before that held seven judicial officers hostage for hours and attracted the ire of the Supreme Court. The 20-member NIA team reached Mothabari in the afternoon in 12 cars kept at the Kolkata airport - about 315 km away - hours after the state Criminal Investigation Department (CID) arrested All India Majlis-e-Ittehad-ul-Muslimeen (AIMIM) leader, Mofakkerul Islam, from Bagdogra airport in Darjeeling district and said he was one of the main conspirators behind the violent agitation. A second man, identified as Akramul Bagani, was also arrested for allegedly uploading videos on YouTube. "With this, the number of arrests made since Wednesday has gone up to 35. We have registered 19 cases throughout Malda. Islam is named in three of these cases," additional director general of police(ADG) north Bengal K Jayaraman said. Seven court-appointed judicial officers - two of whom were women - were trapped inside the BDO's office for more than eight hours on Wednesday night until the police escorted them out around 10pm. An eighth officer - a woman - was stranded in her car on the road to the BDO's office during the agitation in which locals blocked roads, including NH-12. As the officers were being driven to safety, people blocked roads with bricks and bamboo poles and pelted stones at the passing vehicles, damaging several. The NIA team visited these spots and collected samples....