Chatterjee, a senior Trinamool Congress (TMC) leader, arrived at the CBI office here in the morning and his interrogation continued till evening.
He was interrogated by the CBI officials yesterday also.
The mayor was purportedly seen accepting money from a businessman in the Narada tapes.
Several other TMC leaders, including MPs and ministers, also allegedly accepted money from Narada News CEO Matthew Samuels, who posed as the businessman while conducting the sting operation.
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