A worker died and two others fell unconscious after reportedly inhaling toxic gases while working in a manhole in Vaikuntapuram area of the city on Wednesday.
A. Arumugam (32), hailing from Puttur mandal and employed by the Municipal Corporation of Tirupati (MCT) as a contract driver in the sewage cleaning vehicle, got into a newly-built manhole on finding his fellow worker Mahesh showing signs of discomfort in breathing.