CBI sources said that Roy was summoned to appear to explain his involvement in the alleged Narada tapes where he was purpotedly shown accepting money from a businessman in the sting operation.
Matthew Samuels of Narada News posed as a businessman to conduct a sting operation on several Trinamool leaders, including MPs, MLAs and ministers.
So far, Trinamool Congress MP Sultan Ahmed and MLA Iqbal Ahmed have been already interrogated by CBI in the same case.
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