Health Minister Lesley Griffiths says she does not consider mephedrone use 'a huge problem' in Wales.
But she added that educating people about it now will raise awareness of the dangers and help prevent people trying the substance in future.
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South Wales Police tweeted in the early hours of Sunday morning that they had been caught on a stretch of the M4 near Port Talbot.
Cloudy and damp for most of us with outbreaks of rain.
More than 200 people attended the service after Bethel Community Church was destroyed by the fire.