Man Faces Prosecution in Osaka Fire That Killed Two Firefighters

A man is facing prosecution in Osaka, Japan, for allegedly causing a devastating building fire by carelessly discarding a cigarette butt. The incident, which occurred on August 18, 2025, in the Dotonbori district, led to the tragic deaths of two firefighters and injuries to five others.

The 35-year-old suspect was reportedly smoking at the base of a six-story building around 9:30 a.m. He allegedly failed to extinguish his cigarette before discarding it onto the ground, which was littered with plastic bags and bottles. The discarded cigarette ignited the debris, rapidly spreading the fire to the adjacent seven-story building.

The inferno raged for over nine hours, burning an area exceeding 300 square meters. Firefighter Takashi Mori, 55, and his 22-year-old colleague Mitsunari Nagatomo became trapped by a flashover inside the seven-story building and died from suffocation. The Osaka Fire Department's investigation revealed that the fire originated in the lower floors of the six-story building and climbed the exterior walls of both structures. Factors contributing to the fire's spread included illegal outdoor signage, wooden facade elements, and air conditioning units.

Prosecutors are strongly recommending a public prosecution for the man, who is charged with negligent arson. The incident serves as a stark reminder of the dangers of improperly discarded smoking materials, particularly in densely populated urban areas.