The Environment Agency updated that "new dead fish" were still being found at a pond in Roke near Wallingford after over 1,000 deaths were initially confirmed in early November.

The initial situation emerged on Saturday, November 8, when campaign group Windrush Against Sewage Pollution (WASP) went to the site.

The Environment Agency said that "specialist officers" were investigating the scene while Thames Water also launched a probe, due to its nearby sewage works hitting "a problem" at the same time.

READ MORE: Thames Water probe after 1,000 fish die in Oxfordshire pond

In an update to locals on Sunday, November 9, Berrick Salome Parish Council confirmed that McAllister (contractors for Thames Water) had "caused a blockage".

Neil Godfrey, of the parish council's drainage group, said: "While working on lining the section between the watercress beds or fishing pond and the Rokemarsh pumping station, the operation failed, and caused a blockage."

Ash Smith of WASP at the scene (Image: WASP)

The location of these works reportedly connects through waterways to the Roke pond, which includes grass carps, perch, roach and bream and has been used as a fishing point for local anglers for many years.

"The sewage runs really closed to the lake," said Ash Smith of WASP.

"There was a blockage and that happened at the same time. If that wasn't it, then it's a massive coincidence."

The pond near Roke (Image: WASP)

Mr Smith had suggested that a fluorescein dye test be used to establish whether there is a link between the sewage works and the pond but - in its most recent update - the Environment Agency did not confirm this had been done.

However, it did say more dead fish had been found.

A spokesperson said: "We had some reports of new dead fish found last week. The investigation continues.

The Environment Agency has said over 1,000 fish have died (Image: WASP)

"As ever, if any readers have information or new concerns about the pond they should contact the Environment Agency's 24-hour hotline immediately: 0800 807060."

Mr Smith had warned that, despite the "traumatic" scenes in early November, more fish could die, and the Environment Agency has been confirmed he was right.

He said this could be because their gills had been permanently damaged by pollution.

He described the incident as "tragic" for the local community and added: "I think they were all really fond of the fish and really cared for them."

In an update on November 19, Thames Water said the company is "investigating" the cause and that it takes "its responsibilities seriously".

The spokesperson for the UK's largest water company said: "We are aware of a pollution issue in Roke and are investigating the cause of this with the Environment Agency.

"Thames Water takes its responsibilities to monitor and maintain its wastewater network seriously and understands the concerns raised by local residents."