The CBI on Monday launched parallel raids and later arrested TMC heavyweights and ministers Firhad Hakim, Subrata Mukherjee and MLA Madan Mitra in its probe on the Narada sting case. Within hours, Chief Minister Mamata Banerjee reached the CBI office. TMC supporters started protesting over the arrests of ministers and TMC leaders. Supporters pelt stones while protesting outside CBI office. Watch this report.