According to the Tokyo Fire Department and others, at around 4:45 pm on the 25th, there was a report that an explosion sounded at a chemical equipment manufacturing company in Kugahara, Ota-ku.
In addition to white smoke coming out of the workshop on the first floor, the windowpanes are broken and scattered.
According to the Tokyo Fire Department, a man in his 50s is unconscious and a man in his 80s is also injured and taken to a hospital.
The site is an area where houses and factories are lined up about 1 km north of Ikegami Station on the Tokyu Ikegami Line, and the Metropolitan Police Department and the Tokyo Fire Department are investigating the detailed situation.