Trinamool Congress's member of Parliament Sultan Ahmed on Monday went to the Central Bureau of Investigation (CBI) city office and submitted documents as required by the investigating agency.
Earlier in the month, Ahmed appeared at the CBI office on the agency's summons in the Narada sting footage case.
The Trinamool Congress leader from West Bengal was purportedly seen receiving hoards of cash in the sting footage.
Besides Ahmed, other TMC members of Parliament, legislators and ministers are also allegedly involved in the case.
--IANS
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