Two pig farm workers die of methane gas poisoning
Police said Sunday that two workers at a pig farm in Hirosaki, Aomori Prefecture, were found dead on Saturday night. The results of an autopsy showed the two men died of methane gas inhalation, according to police.
The bodies of the two workers, aged 36 and 63, were found in a sludge storage tank at about 8 p.m. Saturday night, Fuji TV reported. Police believe they died from inhaling methane gas from the excrement of the pigs.