The incident occurred around 11 a.m. on Thursday at the busy Nitin Chowk on the Eastern Express Highway in Thane.
A Shiv Sena member was arrested today for allegedly assaulting a worker a woman traffic constable in full public view in Thane.
Yuva Sena chief Aditya Thackeray today said accused Shashikant Kalgude, arrested on the charge of attacking an on-duty woman police officer on Thursday, was no longer associated with the party.
Distancing itself from the incident, the party it "had nothing to do" with the attack.
"Absolutely nothing to do with the party at all, (it) doesn't endorse (the assault)," Mr Thackeray said.
"Office bearer or not, doesn't endorse the shameful act," Mr Thackeray tweeted about the incident.
The brutal assault on the woman traffic cop - whose identity has been withheld by the police - was captured on a CCTV installed nearby. Shocked people from across the state bombarded the Shiv Sena leaders with tweets and messages.
The incident occurred around 11 a.m. on Thursday at the busy Nitin Chowk on the Eastern Express Highway in Thane when the 29-year-old constable noticed the accused talking on his mobile phone while driving.
Mr Kalgude ignored the constable's signal to stop and attempted to drive his sport utility vehicle past her but she jumped in front, forcing him to stop.
She demanded to see his driving licence and vehicle documents, but he allegedly abused her, came out of the SUV and slapped and punched her viciously, as stunned pedestrians and other drivers looked on.
As the constable bled profusely from her nose, a lawyer Pratik Pawar passing by on a bike tried to catch him but was also slapped and jostled in return. But Pawar held on to the accused and asked an onlooker to summon the police.
Mr Kalgude was taken to the Naupada police station and booked for assault and use of criminal force to deter a public servant from discharge of duty and molestation.
State Women's Commission chief Chitra Wagh condemned the assault, as Thane Police decided to recommend suspension of Kalgude's driving licence.
Congress' leader of opposition Radhakrishna Vikhe-Patil, meanwhile, condemned the assault.