Legal highs getting 'more dangerous'

Police in Wales are having to deal with more callouts linked to so-called legal highs.

The chemicals, also known as new psycho-active substances, are also being linked to crime, suicide and dependency - even though most are not controlled substances.

As a BBC Wales investigation for the Eye on Wales programme has uncovered - there are warnings that some of the substances being used are becoming more potent and more dangerous.

Paul Heaney reports.