The incident took place opposite the Bimal Auto showroom in Adabari.
According to reports, as many as four buses were gutted in the fire.
The source of the fire is yet to be ascertained.
Meanwhile, fire tenders rushed to the spot and are trying to douse the fire.
Onlookers said that one of the buses parked alongside the road suddenly burst into flames.
Soon the fire spread to several other buses parked aside it.