Bottles of an illegal spirit, which could be potentially damaging to health, have been found on sale in Norwich.

A warning has now been issued to shoppers about the illicit vodka, called Drop Vodka 70cl and which is typically found for sale in small independent retailers.

The Food Standards Agency has warned that the liquor contains Propan-2-ol and other substances which can be harmful.

Lack of information on the labelling means that it has not yet been possible to identify the manufacturer, or to trace its distribution.

The main distinctive marks by which the spirit can be identified include that the duty stamp is not fluorescent under UV light, the barcode 0123456789 is not a valid bar code, there is no spirit manufacturer's lot number on bottle and no name and address of the manufacturer on the label.

The vodka's front and rear labels are self-adhesive, the punt mark on bottles show it was made by 'Ol glassware' and the general print quality of the labels is poor.

The duty reference on the illicit bottles A000000000618 belongs to Glen Catrine Bonded Warehouse Ltd, however Drop Vodka is not a Glen Catrine product.

The alert has been raised by Breckland District Council. Paul Claussen, the council's executive member for planning and environmental services, said: 'We are working with our businesses to protect the public and ensure that this potentially dangerous vodka is removed from sale.'

Five men died and one was seriously injured after a huge explosion at an illegal vodka distillery in Boston, Lincolnshire in July.