Four people were killed and seven injured today in a fire at an establishment near Tokyo offering sexual services, Japanese police said.
Aerial footage on public broadcaster NHK showed grey smoke pouring from a concrete building in the city of Saitama, 25 kilometres north of Tokyo, as dozens of firefighters battled the blaze.
It took about five hours to extinguish the fire.
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"We also found a body whose gender is undetermined inside the establishment," he added.
The seven people were slightly injured and treated in hospital.
The emergency services received calls from people inside the establishment saying they could not escape because the building was filled with smoke, according to NHK.
Police are investigating what caused the fire and the identity of the people who died.
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