Recycling firm says oil not from north
The Police Service of Northern Ireland, meanwhile, said it had not been asked by the gardaí to investigate the source of any contamination, despite reports that inquiries were focused on a depot in Co Tyrone within its jurisdiction.
Yet, both the gardaí and the PSNI confirmed they were assisting each other with inquiries into how potentially cancer-causing elements of the oil, known as dioxins, ended up in the feedstuffs produced by Millstream Power Recycling in Co Carlow for pig farms across the country.