Somen Kumar Suryabangshi (29) was arrested from a flat in Chinar Park in Baguihati late last night after Trinamool youth leader Kanishka Majumdar lodged a complaint against him, a senior officer of Kolkata Police said.
Suryabangshi had caught hold of Majumdar when the latter's vehicle tried to flee after hitting a person on Bijon Setu in February and handed him over to police.
The TMC leader lodged a complaint earlier this month questioning Suryabangshi's identity as an IPS officer, he said.
"When contacted, Bokaro Police denied having anybody as an Additional SP. During our investigation we found that the accused has been cheating people posing as an IPS officer and till date he has collected lakhs of rupees in that manner," the officer said.
Several fake identity cards depicting Suryabangshi as an "IPS officer", a vehicle with number plate "identifying" him an a senior police officer of Jharkhand were seized, he said.
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