Warnings have been issued that potentially cancer-causing sweets are being sold in West Yorkshire.
The traditional Asian sweets contain brightly coloured fluorescent pink or yellow dyes that are illegal because they are carcinogenic.
Samples of sweets were taken from a number of outlets across West Yorkshire and tested by the West Yorkshire public analyst.
They found dyes called rhodamine-B – commonly used to stain slides in laboratories and to test for leaks in drains – and auramine, which is also used in laboratories.
Current investigations appear to indicate that the offending sweets are not coming from a single supplier and officials believe not all sources have been identified.
West Yorkshire Trading Standards said the products could be identified by shining ultraviolet light on them to make them fluoresce.
A spokesman said: “We would urge businesses to contact their suppliers to confirm if these ingredients are present in their products.
“If it is found to be an ingredient then these products should be removed from sale immediately.”
Anyone with concerns relating to these items should contact Citizens Advice on 08545 040506.
It is an offence under The Food Additives, Flavourings, Enzymes and Extraction Solvents (England) Regulations 2013 to produce or supply products containing these non-permitted illegal colours.
Anyone who has a legitimate concern relating to these items, should contact the Citizens Advice Consumer Helpline on 08454 04 05 06.”