The government's handling of the situation has raised more questions than answers. In late April government officials said they didn't know the cause of the fish kill but they blamed it on a red tide or 'a chemical toxin generated by people on land or sea.'

Since then Hanoi has appeared to back off its statements and Vietnamese Prime Minister Nguyen Xuan Phuc has vowed to investigate any agency organization or individual that violated the nation's environmental laws.

And last week Vietnam's top environment official apologized for the government's 'confused' handling of the disaster that has killed tons of fish across a wide swath of the country's central coast.

While the Phuc government may be looking for someone to blame An told RFA that scientists already know what killed the fish.

'Scientists have found out how much waste there was and how toxic it was' he said. 'They have satellite pictures from April 6 to April 20 to back up what they calculated.'

A Fishgate scandal

Not only is the fish kill that originated near the industrial port of Vung Ang an environmental disaster that threatens Vietnam's vital seafood industry it is a developing into a major political scandal for Phuc.

The disaster doesn't just have coastal dwellers up in arms demonstrations have occurred in the streets of major cities as Vietnamese have rallied around the issue.

While Phuc has promised a thorough investigation into the disaster he has also promised to deal harshly with those who want to use the scandal to stir up trouble for the government. Two people were arrested this week for allegedly trying to incite Vietnamese to demonstrate over the fish kill.

The disaster didn't have to play out the way it did An said.

'When the incident happened scientists came up with many proposed methods to look for the causes' he said. 'But in Vietnam this matter is sensitive so it is the government's decision to publish the results including satellite pictures.'

While the government's handling of the disaster is open to question An said that the nation's scientists are largely in agreement over the cause.

'Scientists have found the causes of environmental crisis in Vung Ang and they already had a prediction of how this would spread and what the ecological consequences would be' he said.

Up to Hanoi

While scientists might know the cause it's up to Hanoi to reveal it he said.

'This is the government's decision not the scientists' decision' he said. 'Scientifically we are not as developed as other countries like the US German Russia or France but we do have enough knowledge to find the causes and have specific data to back up what we found.'

Hanoi asked for help the disaster from nations around the world but An said he doubted their results will differ from what Vietnamese experts have discovered.

Since the disaster first began to unfold in early April much of the attention and initial blame for the catastrophe was leveled at the Formosa Ha Tinh Steel Corporation that operates as a subsidiary of Formosa Plastics Corporation

Vietnamese divers reportedly observed a huge discharge of reddish liquid on April 4 from rom the mouth of a mile-long waste water pipe leading from Formosa's $10.5 billion steel mill and port facility in Vung Ang.

Formosa has stated flatly that all of its activities comply with Vietnamese laws and regulations and that it had spent $45 million on a state-of-the-art waste management system including the four-foot wide pipe.

A frustrated people

As information about the disaster has slowly leaked out Vietnamese are beginning to get frustrated with the government and its apparently cozy relationship with Formosa said Le Dang Doanh one of the country’s leading economists.

'They are frustrated because of the slow response' Doanh told RFA. 'They want to know why Formosa is allowed to release their wastewater to the sea. Why the environmental agency of Ha Tinh province signed a contract to let Formosa test their own wastewater. And of course why that office always says that their wastewater meets the acceptable standards.'

Donah a former advisor to the Ministry of Planning and Investments said it looks like the government sent 'the fox to mind the geese' in Vung Ang.

'That is the reason why Ha Tinh province government can't answer questions about Formosa's importation of tons of chemicals to clean their pipeline and release it to the sea; when they did it; and how much was released.'

Report by Gia Minh and Nam Nguyen for RFA’s Vietnamese Service. Translated by Viet Ha. Written in English by Brooks Boliek.

Copyright Radio Free Asia