The Calcutta High Court on Thursday transferred to the Central Bureau of Investigation (CBI) the probe relating to murder of Trinamool Congress leader Tapan Dutta. The CID West Bengal which was probing the case was directed to immediately handover the investigation to the CBI. Dutta, then vice-president of Trinamool Congress' Bally Jagacha block unit in Howrah, was shot dead on May 6, 2011....