Kolkata: Former Rajya Sabha MP and TMC leader Santanu Sen on Thursday resigned as the party's national spokesperson and slammed the outfit over the controversy surrounding the R G Kar rape and murder case and described the poll defeat as a public rejection of "unethical practices".
The resignation comes at a time the TMC is battling open dissent, public recriminations and an erosion of organisational cohesion following its rout in the assembly elections.