Fish die in River Arun 'sewage spill' in West Sussex
Hundreds of fish have died in a sewage spill on a river in West Sussex, the Environment Agency has said.
It said the fish had been killed along a two-mile stretch of the River Arun south of Horsham.
The agency said the source of the pollution had not been confirmed but it was carrying out a criminal investigation.
Michael Turner, of the agency, said: "This is a major sewage pollution incident."
He added: "It's distressing to see such damage to a beautiful part of our environment, which will impact on enjoyment of the river."
Southern Water Services has been using equipment to replenish oxygen levels in the water and prevent further deaths.