Two buses belonging to Al Baraka Paribahan caught fire while parked near Gabtoli intersection on Naogaon bypass road around 12:30am on Tuesday.
A Fire Service unit rushed to the scene after receiving information about the incident and brought the fire under control.
According to local residents and police, three buses were parked side by side near the intersection when two of them suddenly caught fire around midnight. Locals alerted the Fire Service and police after noticing the blaze.
Firefighters arrived shortly afterwards and extinguished the flames. No casualties were reported, but both buses were damaged in the incident.
Mintu Rahman, officer-in-charge of Naogaon Sadar Model Police Station, said police rushed to the scene after receiving the information. With the assistance of the Fire Service, the fire was brought under control.
He said no casualties were reported, and preliminary investigations suggested that the fire may have originated from a mosquito coil.