A chemical leak that killed 4,400 fish in a Didcot stream is still being investigated.
The gudgeon, roach, dace and chub were discovered in Moor Ditch, north of the Ladygrove estate, at the end of July.
The Environment Agency (EA) said water samples indicated a cleaning chemical or detergent entered the waterway, but has now been flushed out.
Spokesman Narinder Sokhi said: “The chemical had been identified as a chemical related to cleaning but we do not know the source.”
If an individual or organisation is suspected of being responsible for the pollution, the agency could prosecute them.
Our top stories
2:26pm Sunday 23rd November 2014
A HORSE was killed after it collided with a car near Steeple Aston yesterday.
2:17pm Sunday 23rd November 2014
OXFORDSHIRE is set for a cold snap tonight and tomorrow with temperatures as low as -2C expected in some parts of the county.
11:51am Sunday 23rd November 2014
A WOMAN from Witney has been missing since Friday.
6:24pm Saturday 22nd November 2014
TWO men were assaulted in Oxford city centre last weekend.
What have our brilliant columnists said this week - choose your favourite in our interactive collage
4:00pm Saturday 22nd November 2014
Just what have our thought-provoking columnists been writing about this week? Catch up with our interactive collage giving you a choice from 9 of the best
3:00pm Saturday 22nd November 2014
We've had some wonderful pictures this week - here's our interactive spread with links to the stories behind the photos