Roy, who was summoned by the agency, went to the ED office in Salt Lake, a senior official said.
The Lok Sabha member from Dum Dum constituency was one of the several Trinamool Congress MPs, MLAs and ministers who were purportedly shown accepting money from a businessman in a sting video.
Narada News CEO Matthew Samuel had posed as the businessman and conducted the sting operation.
Besides Roy, the other prominent leaders facing allegations of involvement include Kolkata Municipal Corporation Mayor Sovan Chatterjee, Urban Development Minister Firhad Hakim and Rural Development Minister Subrata Mukherjee. They have already been interrogated by the agency.
The Central Bureau of Investigation and ED are investigating the case.