The Bureau of Fire Protection-National Capital Region identified the victim as Laurence Beniat, 37.
Arson investigators placed the damage to property at P500,000.
On Tuesday, a one-story building occupied by Pointer Enterprises Inc., an electrical supply store, was hit by a fire that reached the third alarm at 4:51 p.m.
The fire was extinguished at 7:21 p.m.
Investigation is still ongoing to determine the cause of the fire.