Officials say the workers were conducting an emergency examination of the sewage pipes when the accident occurred.
Four workers died in Japan after they fell into an opening near Tokyo while searching the sewage pipes, according to its public broadcaster NHK, citing the police.
NHK reported on Sunday that the incident that occurred in the city of Geyda in Saitama Governorate, north of the Japanese capital, occurred on Saturday, when the four men, all of whom were in the fifties, and other co -workers inspecting the wastewater tube.
City officials say that the workers were conducting an emergency examination of the wastewater pipeline that the central government ordered to implement, after a huge road cave in January.
NHK quoted the police as saying that during the inspection, a worker fell into the Manole opening, followed by three of his co -workers who were trying to save him.
According to the police, a diameter of 60 cm (24 inches) and more than 10 meters (33 feet) in the depth.
The firefighting administration from the area also confirmed the incident at the news agency of Agence France Presse.
NHK videos showed many emergency and rescue personnel near the Manole opening.
The department said that the rescuers discovered hydrogen sulfide – a toxic gas with high concentrations – coming out of the donor opening.
But city officials refused to belong to the reason for the first fall.
“The detailed conditions that lead to the accident are still unknown, so it is too early to say anything about our responsibility,” an official in the city of Geyada told AFP, provided that his identity is not disclosed.
The four workers were recovered and taken to the hospital, where their deaths were announced, according to local media reports.
About 10 workers were at the inspection place, and he ordered the cleaning of wastewater and sludge tubes if necessary.
In May, the Japanese rescuers regained the body of a 74 -year -old truck driver, after months of swallowing due to the collapse of a road in Saitama Governorate.
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