“You can follow someone for years and think you know things about them but they can tell you anything they like.
“I would urge all parents to check their children’s social media, particularly if they are talking to people they’ve never met.
“I’d also say to keep everything public. No messages. And make sure that your child knows they can come to you if something doesn’t seem right.
“The police who dealt with the case have been absolutely fantastic and we can’t praise them highly enough. This must have one of the most horrific jobs on Earth.”