How the incident happened

TWO crews from Burton and one from Barton under Needwood attended the fire, along with the aerial ladder platform from Longton Fire Station, near Stoke.

Following the discovery of the factory, the investigation was handed to Staffordshire Police, who were called at 7.50am.

The force said officers attended the scene but there was nobody in the building and no cannabis was found.

Anyone with information should contact Staffordshire Police on 101 quoting incident 109 of November 30.