THE death of more than 4,000 fish in a Didcot stream has been linked to some kind of cleaning chemical or detergent.
The Environment Agency (EA) is now investigating the source of the pollution in Moor Ditch, north of the Ladygrove estate.
The first dead fish were spotted by a Didcot resident on Saturday night, who called the EA.
On Monday, technical specialist Andy Killingbeck found more than 4,000 dead gudgeon, roach, dace and chub.
EA management team leader Helen Page said: "EA officers continue to investigate the pollution incident which has resulted in a fish kill at the Moor Ditch. An inspection of the site on Monday discovered more than 4,000 dead fish.
"Live fish are also still present so early indications are that the pollution has flushed through. Water samples indicate that a cleaning chemical or detergent has entered the waterway.
"We are investigating possible sources of the pollution. We are carrying out an ecology survey to assess the impact on invertebrates in the ditch."
- Our top stories
- Companies still signing up for jobs fair at Oxford Town Hall
- Hundreds will gather as soldier killed in Iraq is repatriated
- Staff and students celebrate actress's big win at the Golden Globes
- Inquests opened into death of couple who died in cottage fire on Blenheim Palace estate
- Inquest opened into death of pensioner found in River Ock in Abingdon
- Man wearing beanie hat exposes himself to woman on city street
- Chain running Randolph Hotel in Oxford in 'best shape ever' after announcing £55m profit
- Cyclist and car involved in collision outside Seacourt Tower
- Oxford United vow to act quickly to resolve flag-waving dispute
- UPDATE: Three more men arrested in connection with attempted murder after altercation in Banbury
- Oxford United v Swindon Town - UPDATES
- CLARIFICATION: Hygiene report of Delight 2 in Didcot
- Man 'obsessed' with BBC journalist goes on trial after allegedly breaching restraining order against her
- Families urged to consider signing up for organ donation