HALTON Council's Drug Action Team has issued a warning to heroin users following advice from colleagues at a Lancashire-based authority about contaminated substances.

Users of heroin in the area are being warned that there is a batch of the drug currently in circulation that contains Lithium and Ketamine.

It is very dark brown in appear

ance and a number of users have already overdosed following use.

If you experience any difficulties it is important that you call an ambulance.