Twin brothers, aged 30, died after a fire destroyed their apartment in Sapporo on Friday morning.
According to police, the fire broke out at around 5:30 a.m. in the wooden three-story building in Teine Ward, TBS reported. After firefighters extinguished the blaze, the two brothers were taken to hospital where they were pronounced dead due to carbon monoxide poisoning.
Police said the fire probably started due to a kerosene heater in the livingroom. A pile of rubbish near the heater is believed to have caught fire.