A blanket ban on so-called legal highs has come into force in the UK.
Laws criminalising the production, distribution, sale and supply of what are otherwise known as new psychoactive substances began at midnight.
The chemicals, sold under names such as spice and black mamba, are designed to give users the same effect as drugs such as cannabis and cocaine.
Last year legal highs were linked to more than 100 deaths in the UK and a rise in violent assaults in prison.
Offenders who break the new laws will face up to seven years in prison under the Psychoactive Substances Act.
Police will also be able to shut down "headshops" - stores which sells drug paraphernalia - and online dealers in the UK.
Continued
Legal highs ban comes into force across the UK - BBC News