New Delhi, July 10 -- Two labourers fell unconscious and died while carrying out maintenance work at a private hospital in west Delhi's Paschim Vihar, police said on Wednesday.

The incident happened at Action Balaji Hospital on Tuesday, they said, adding that those killed have been identified as Uttar Pradesh natives, Birjesh (26) and Vikram (30).

According to the preliminary investigation, the two labourers had fallen unconscious while working on the maintenance of a carbon filter system inside the hospital premises, they said.

The maintenance work was reportedly being carried out by a contractor under the annual maintenance contract, the police said.

Upon receiving the information about the incident, a team from Paschim Vihar East pol...