Two vehicles caught fire on Rue des Marchandises in Anderlecht, near Brussels-Midi station, at around 7:30 AM on Wednesday morning.
The fires spread to a nearby construction site and ten people were forced to evacuate, reports BX1.
Firefighters arrived quickly on the scene. The two vehicles, a Citroën Berlingo and an old bus, were destroyed by the fires.
Nobody was injured, confirmed spokesperson of the Brussels fire department, Walter Derieuw.
A suspect was arrested on-site, but the individual was not connected to the fire.
"We have not caught the culprit," said police spokesperson, Serge Bouchez, reports Bruzz.
An investigation into the incident is ongoing.
The Brussels Times