Oireachtas members have heard of the devastating effect that drugs known as "legal highs" are having on people as young as 13 in Ireland.

A community leader in Monaghan town told committee members that such was the threat posed by the drugs that people were talking about who would die next.

For the first time, members of the Oireachtas committees on health and justice joined forces to hear contributions from those who are dealing with the impact of "legal highs".....