Investigation after 100 fish die in a Cardiff river
The Environment Agency is investigating how 100 fish came to die in a Cardiff river.
The dead bream and roach, between 1 - 5 in (2.5 - 12.7 cm) in size, were spotted in the Pil-Du Reen at St Mellons.
Officers were alerted to the incident via their emergency hotline.
Low oxygen levels in the river are thought to be behind the deaths and the agency is continuing to take samples to see if pollution is to blame.
Gary Evans, who is leading the investigation for Environment Agency Wales, said: "Our officers are on site working hard to establish the cause of the fish deaths.
"We have taken water samples and will carry out further tests to try and find the cause. The dead fish will be removed.
"If the cause of these deaths are linked to pollution we will investigate the source and take any action necessary."
Anyone with information can contact Environment Agency Wales free on 0800 80 70 60.