Vijayan said that the State Pollution Control Board (PCB) conducted an inspection of the river following the incident and the water samples ... on the shores of the Periyar, he said.

Hundreds of fish, valued at lakhs of rupees, were discovered dead in the Periyar River ... The water collected from the river ...

KOCHI: It’s been five months since the May 20 Periyar fish kill dealt a huge ... “The fish samples indicated low dissolved oxygen in the river water. There was also the presence of sulphur.