The algal samples have been collected from the following places in Assam: Nagon, Sonitpur, Mangaldai, Karbi Anglog, Golaghat, Jorhat, Nalbari, Kamrup, Dhubri, Bongaigaon, Barpeta, Dhemaji and Goalpara.

This information was given by Indian Minister of Defence Minister AK Antony in a written reply to Shri Pradeep Majhi and Shri Kishnbhai V Patel in Lok Sabha.