An investigation into the circumstances surrounding the death of thousands of fish in the River Odra this summer has found no abnormalities in sewage discharge into the river, an environmental official said on Thursday.
The Polish prime minister has said the environmental disaster on the River Odra that resulted in the death of thousands of fish was an act of nature.
A total of 134 tonnes of dead fish, recovered from the River Odra, have already been disposed of, the Zachodniopomorskie provincial governor has said.
Through the use of satellite images, German scientists have confirmed a massive algal bloom in the River Odra, in which an unknown pollutant has led to mass deaths of fish, the RND website reported on Monday.
Tests on dead fish from the River Odra show no signs of increased levels of dangerous chemicals, the head of the state veterinary institute has told PAP.
Over 106 tons of dead fish recovered from the River Odra have already been disposed of, a spokesman for the Zachodniopomorskie provincial governor has said.
Rare microorganisms known as golden algae found in recent water samples from the River Odra could be the source of the river's contamination, a government minister said on Thursday.
Prosecutors investigating the cause of the massive fish die-off in the River Odra have appointed a team of experts to help both the prosecutor's office and police, the justice minister has said.
Hundreds of firefighters, policemen and soldiers deployed to the Odra have recovered over 100 tonnes of dead fish as scientists continue to scramble to find the cause of the catastrophe.
Dead fish have been seen in the River Odra near the northern city of Szczecin, a provincial official has announced.