According to Asahi newspaper, at about 8:30 of September 10,three men were reportedly fainted in a room on the second floor of a buildingthat was being destructed in Setagaya ward of Tokyo.
Tokyo police said that among the three, all Vietnamese, twowere dead and the third was taken to a hospital but remains unconscious and ina serious condition.
Carbon monoxide was detected at the site.
The Mainichi newspaper reported that the two workersapparently died of carbon monoxide poisoning.
However, there was no trace of anything having been burnedat the site. A gas water heater in the room was not working as a hose was notconnected to it.
It quoted sources close to the investigation as saying anelectric generator was working in a room on the first floor. There is apossibility that carbon monoxide from its exhaust gas drifted to the secondfloor.
Currently, Tokyo police are coordinating with relevantagencies to investigate into the case./.