Efforts to control oil leaking into a stretch of river have continued for a fourth day.

Teams have been at the source of the leak on the River Wye at Rotherwas, in Herefordshire, since Friday.

A boom and absorbent sheets have been placed around the drainage outlet to control the spread of what is believed to be engine oil.

The Environment Agency (EA) said it was continuing to investigate the incident and was working closely with Welsh Water.