A used water tank coolers emergency tank

A used air tank for water storage was used in a fire in the San Jose, California apartment complex.

The water tank was filled with water and left on top of a damaged apartment building.

San Jose fire investigators say a propane tank was used as a source of fuel.

The incident happened at the apartment complex, where there were several water tanks.

The fire started in a tank that had leaked and spread to the neighboring apartment building, according to investigators.

They have not identified a suspect or released any information about the incident.

Officials have not released any names.