A clothing factory in Russia's Noginsk City went up in flames on Monday night, killing four people and injuring more than 20 others. All the casualties were Vietnamese citizens.
The factory was unlicensed and located on a Vietnamese-run vegetables farm, Vietnam News Agency reported Wednesday.
The victims are yet to be fully identified as they did not have personal papers on them, it said, adding Russian police are looking for the factory owner who is supposed to keep the workers' papers.
The injured people are being treated at a nearby hospital while the dead have been kept in its morgue, the news agency said.
One person at the farm said at least one of the dead people came from Nam Dinh Province and another was from Hai Duong.
There was no information about the cause of the fire.