Three persons, including a businessman and his son, died after inhaling a poisonous gas at a sump at Tirumullaivoyal on Friday. Another person who came to their rescue is in a critical condition.
The police said G. Premkumar, 50, was living with his family on 52nd Street at Sivasakthi Nagar. A sump, built in the backyard of his house, had been in disuse for long. On Thursday, he engaged a couple of conservancy workers to clean it. The sump was closed tight after bleaching powder was dumped into it.
On Friday morning, Premkumar went into the sump to check whether he could store water in it. Within a few seconds, he collapsed. His son Pradeep Kumar entered the sump to rescue his father. He, too, collapsed.
