Danish police said Friday the cause of a fire that destroyed the Denmark facility of land-based salmon farming giant Atlantic Sapphire remains unclear, but it ruled out arson or any foul play related to the blaze.

Danish police gave a brief comment announcing the conclusion of its investigation, saying only that it was inconclusive.

The fire completely destroyed the facility on Sept. 15 last year.

The plant was relatively small, although it had been developed in several stages.