Amidst of ongoing tussle in Tata group, BJP MP Dr. Subramanian Swamy has written a letter to Prime Minister Narendra Modi to take a call on Ratan Tata. In his letter he urge the Prime Minister to direct a setting up a SIT consisting of the CBI, Enforcement Directorate, SEBI and prosecute Mr. Ratan Tata with full vigour and withoout interference of any in the Government to protect Mr. Tata.