Four people were arrested for allegedly damaging five taxis, owned by North Indians, in the wee hours on Saturday in Central Mumbai, police said.
Efforts were on to ascertain whether the arrested belonged to Raj Thackeray-led Maharashtra Navnirman Sena (MNS), which had run an anti-north Indian campaign last month, they said.
"At around 0200 hours, a group of four motorcycle-borne men stopped three taxis in Worli area and asked the drivers where do they hail from. On being told that they belonged to North Indian states, they broke the window panes of the taxis," police said.
Later, they went towards nearby Lower Parel area and damaged two more taxis, police said, adding police patrol parties across the city were alerted and the four were arrested immediately.
The arrested have been identified as Ashish Parab, Pravin Pawaskar, Sameer More and Milesh Shelar.