The labourers fell in the sewer and got stuck. The police rushed to the spot soon after the incident.
Meanwhile, with the recent deaths of sanitation labourers while cleaning sewers had forced the Delhi government to adopt fully mechanised cleaning of sewers and penalise agencies continuing manual cleaning.
The decisions to shift to fully mechanised cleaning was taken at a meeting chaired by Lt Governor Anil Baijal in August. The meeting was attended by Chief Minister Arvind Kejriwal and top officials of all concerned agencies including civic bodies.