New Delhi, July 6 -- Three air conditioner mechanics, aged between 18 and 30, were found dead and a fourth man unconscious inside their single-room rented flat in a six-storey building in south Delhi's Dakshinpuri on Saturday morning, police said, adding that the fourth person was undergoing treatment. Police said the victims might have suffocated, likely due to a gas leakage in one of the four AC refilling cylinders kept in the room. They also ruled out the possibility of foul play. P5

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