Drinks giant Diageo has apologised after a pollution incident in Moray which killed a significant amount of wildlife earlier this year.

A chemical, thought to be caustic soda, is understood to have entered the water at the Knockando burn at some time in late April or early May. At the time fly fishers said its salmon population had been wiped out and could take years to recover.

Diageo has apologised for the damage caused to the local environment, and the impact on river users and the wider community.

The Scottish Environment Protection Agency (Sepa) said its investigation into the incident remains ongoing and enforcement action would be considered once it was complete.

A spokesperson for Diageo said it had put updated controls in place and was in ongoing discussions over a long-term plan to support regeneration and restoration in the area.

Sepa said it continued to assess the environmental impacts of the incident and work with relevant parties to ensure any appropriate action was taken to protect and restore the water environment.

A spokesperson said: "Once our investigation is complete we will consider enforcement action appropriate in accordance with Sepa's enforcement policy and guidance and the legislation available to us.

"Where Sepa consider a potential offence meets the criteria for prosecution, we can submit a report to the Crown Office and Procurator Fiscal Service (COPFS).

"Any decision on prosecution is a matter for COPFS."