AN investigation has been launched after more than 1,000 fish were found dead in the River Tean.
Several anglers spotted floating carcasses in part of the River Tean that is popular with anglers across the country on Tuesday, June 3.
A five kilometre stretch of the waterway in Beamhurst, near to Over Fole Farm, has been affected and samples have been taken to establish what is in the water.
Investigators have confirmed that the problem has not spread to neighbouring rivers.
An Environment Agency spokesman said: "We are continuing to investigate the cause, checking and taking samples on the river upstream and downstream of where the incident occurred.
"We are still assessing how many fish have died but early estimates are in excess of 1,000.
"We are also appealing to any anglers who are on the Dove downstream of Uttoxeter to let us know if there is anything out of the ordinary happening.
"Our investigation is ongoing. The River Dove has not been affected."