A 32-year-old labourer identified as Dooman Ray died while cleaning a sewer at the Delhi Jal Board, police said on Sunday. The deceased was a native of Katihar in Bihar, said Additional Deputy Commissioner of Police (northwest) AK Lal.
Ray was declared brought dead after he was rushed to the Max Hospital in Shalimar Bagh.
The incident was reported to the police at around 7:30 am. They were told that Ray was brought dead from the Delhi Jal Board Pump House in Jahangirpuri, Lal said.
During investigation, it was revealed that Ray was working in a sewer there with three other workers.
"The Delhi Jal Board (DJB) has given the contract to KK Spun India Ltd for repair and rehabilitation of sewerage in Jahangirpuri. Today at about 5.30 am, Ray went down in sewer hole to open the valve and died," said Lal.
Officials at the Delhi Jal Board in a statement said they are looking into the matter.
"The DJB is extremely sorry to hear about the loss. The matter is being looked into and action will be taken accordingly," the statement said.
Five men had died in September this year after they had inhaled toxic fumes while working in a sewage treatment plant in west Delhi's Moti Nagar area.