BBC News NI’s Kevin Magee tries to speak to Sharon Shanks
Some of the leaders of self-styled paedophile-hunting groups operating in Northern Ireland have been identified for the first time.
There are increasing concerns about the methodology used many of the groups use, and their lack of accountability.
The so-called paedophile-hunting groups target people online whom they believe are sex predators.
They confront them and broadcast the encounter live on the internet, then call the police.
There have been more than 100 incidents of this nature reported to police in Northern Ireland, but no one has been charged as a result and there have been no convictions.