Sinha alleged that the TMC activists were led by the chairman of the Uttarpara-Kotrang municipality, Dilip Yadav.
Yadav, however said that the BJP workers entered a rally they were holding in the Hindmotor area to protest against demonetisation and Sinha's car was caught.
Hooghly SP Sukesh Jain said that the police was investigating into the incident.
The BJP workers also lodged a complaint with the Uttarpara police station.
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"I was on my way to the hospital when all of a sudden some TMC activists carrying party flags, attacked my car, shouted slogans and even pelted stones. My question is their party leader has been arrested for looting public money. So why are they attacking leaders of opposition parties?" Sinha told reporters.
He said that the attack on leaders of opposition parties was a sign of lawlessness in the state.
"A few days back our party headquarter was attacked. Then bombs were hurled at the house of our party leaders. And today my car is being attacked," Sinha said.
The TMC leadership has declined to comment on the incident.