Workers of Beximco Group blocked Chandra-Nabinagar highway at Sreepur bus stand area in Ashulia, demanding the reopening of their closed factory on Wednesday.
The workers took to the streets around 4pm and set fire to two buses and one truck near Mojar Mill area of Ashulia.
Ashulia Police Station Officer-in-Charge (OC) Nur Alam Siddique said police were deployed at the scene and the situation somewhat calmed down.
Several vehicles were vandalised and journalists covering the incident were reportedly attacked during the protest.
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Earlier, on Tuesday, during a rally, Beximco workers union leaders issued an ultimatum, demanding the reopening of the closed factories by 3pm on Wednesday, along with the assurance of banking services and other facilities for the workers.
After no response from the authorities concerned, Beximco workers took to the streets to stage demonstration.
The OC said efforts are underway to bring those responsible for the incident to justice.