On 17 December 2021, a fire occurred in a psychiatric clinic located on the fourth floor of the Dojima Kita Building in Kita-ku, Osaka, Japan.

[6][7] On 17 December 2021, at 10:20 a.m. local time, a fire broke out at an eight-story building in Kita, a ward of Osaka, Japan.

[1] The clinic primarily treats patients with depression and panic disorder, but also physical ailments, including anemia and sleep apnea.

[2][10][11][8] Dozens of firefighters rushed to the building and the blaze was brought under control in approximately thirty minutes.

[15] Twenty-four people were confirmed dead at the scene of the fire, while three more died in the hospital after the event,[3] including the suspect and the 27th victim who suffered smoke inhalation, but survived.

[18] A doctor who treated some of the casualties told reporters that many of the victims, as suggested by their limited external injuries, died from carbon monoxide poisoning.

[15] A security camera in the building showed that the suspect tossed a bag, probably containing petrol, at the emergency exit.

The victims, with the path to the exits blocked by fire, went into inner windowless rooms in the back of the clinic where they died.

[19] The suspect was in critical condition due to carbon monoxide poisoning and had cerebral hypoxia, severe brain damage, and did not regain consciousness.

Police stated that he was rescued from the fire showing no vital signs, and he was subsequently put on life support in hospital.

[29][13] Minister for Internal Affairs and Communications Yasushi Kaneko ordered the inspection of some 30,000 buildings in Japan that have three or more floors, but only a single stairwell.