Police registered a case against the hawkers and arrested four of them. At least 10 to 15 others are wanted.
Police said the hawkers had been occupying the carriageway at Kandivali West to sell their wares, disrupting traffic movement.
Following complaints, the R/South Ward Office of the BMC warned the hawkers against occupying the carriageway.
A vehicle was also deployed by the BMC to keep a watch on the hawkers.
“The action apparently infuriated the hawkers who claimed it had hit their business badly. As a mark of protest, they threw all their wares on the carriageway on Wednesday,” said a police officer.
Subsequently, a case of unlawful assembly and endangering life and safety was registered.