The Police trace the apartment where the fire originated with an electrical failure as one of the main hypotheses. Experts consider that the rapid spread of the fire surely had to do with the ventilated façade structure of the building.

In parallel to the investigation, the identification of the bodies is being carried out, a complex task taking into account the state in which the remains of the deceased victims have been found. The courts of Valencia are waiting for the results of the DNA analyzes and even anthropological studies for some cases.