A pollution incident has killed several thousand fish in Kent, the Environment Agency (EA) has said.

About 3.7 miles (6km) of a stream known as Sarre Penn and the adjacent River Wantsum, near Canterbury, have been affected, it said.

The agency said specialist officers were at the scene and it was working to establish the source of the pollution.

Meanwhile, Johnny Allen, a volunteer at Kent Wildlife Rescue, told the BBC he had also recovered three dead swans from the area.