# Tiruvallur Ammonia Leak: 5 Dead at Seafood Unit Near Chennai — Safety Under Scrutiny

- Page: https://mychennaicity.in/chennai-local-news/tiruvallur-ammonia-leak-seafood-unit-seven-dead-2026
- Plain text: https://mychennaicity.in/chennai-local-news/tiruvallur-ammonia-leak-seafood-unit-seven-dead-2026/markdown
- Published: 21 Jun 2026
- Updated: 20 Jul 2026
- Source: The New Indian Express (https://www.newindianexpress.com/states/tamil-nadu/2026/Jun/22/tiruvallur-ammonia-leak-death-toll-rises-to-five-67-under-treatment)
- Author: MyChennaiCity Editorial

Five women workers died and 67 remain under treatment after an ammonia gas leak at St Peter & Paul Sea Foods Exports in Kannigaipair, Tiruvallur. Updated June 22 with official health bulletin figures.

## Summary

**Five women workers died** and **67 remain under treatment** after an ammonia gas leak at St Peter & Paul Sea Foods Exports in Kannigaipair, Tiruvallur district, on Sunday, 21 June 2026. A state health bulletin on Monday, 22 June, confirmed the toll.

Early Sunday reports cited seven deaths; the official health bulletin revised the confirmed toll to five.

**Read the full article:** [Tiruvallur Ammonia Leak: 5 Dead at Seafood Unit Near Chennai — Safety Under Scrutiny](https://mychennaicity.in/chennai-local-news/tiruvallur-ammonia-leak-seafood-unit-seven-dead-2026)

## Key facts (updated 22 June 2026)

| Detail | Value |
| --- | --- |
| Deaths | 5 (all women from Odisha) |
| Under treatment | 67 |
| Discharged | 2 |
| Total exposed | 74 |
| Location | Kannigaipair/Manjangaranai, near Periyapalayam, Tiruvallur |
| Leak time | ~11 am Sunday, 21 June 2026 |
| Cause | Ammonia gas leak from refrigeration system (under investigation) |
| Ammonia level at plant | ~300 ppm (per Health Minister) |
| Response | NDRF CBRN team; owners detained; CM forms 3-member probe committee |

## What happened

- Leak occurred while workers were off duty in hostel rooms ~50 m from the ammonia plant.
- Gas spread to worker accommodation; 130 unaffected workers shifted to Govinda Bhavanam marriage hall.
- Two workers died Sunday night; three more died Monday morning per health bulletin.
- Police case under BNS Sections 105 and 125(a); unit owners Mohan and Joseph detained.
- CM announced ₹2 lakh per family; Labour Minister ordered statewide hazardous-industry inspection.
- Exact mechanical cause of leak not yet officially confirmed.

## Editorial note

This article is **MyChennaiCity editorial analysis** on industrial safety compliance, worker accommodation risks, and ammonia refrigeration governance — not a substitute for official investigation findings.

**Image credit:** Scene photograph via [The New Indian Express](https://www.newindianexpress.com/states/tamil-nadu/2026/Jun/22/tiruvallur-ammonia-leak-death-toll-rises-to-five-67-under-treatment).

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