The fire at the boarded-up building that fire crews responded to was caused by an accidental ignition, likely due to discarded smoking materials or electrical faults, as is common in such vacant structures. However, without specific incident reports or official statements from the fire department or investigation authorities, the exact cause remains unconfirmed. Boarded-up buildings often face risks from trespassers, vandalism, or deteriorated wiring, any of which could have contributed to the fire's origin. For precise details, local fire department reports or news coverage of the specific incident would provide the most reliable information.