Posting on a Facebook page set up in the wake of his disappearance, Mr Monks’ sisters, Jillian and Carlyn, said the support they had received had been “out of this world”.
They wrote: “[We] didn’t think it would end like this.
“We are absolutely devastated. Greg was an amazing boy who everyone thought so highly of, was friends with everyone and always made us laugh. We will miss him every day.
“If love coulda saved you, you would live forever.”
They added: “Miss you forever brother.”
Other tributes left online described Mr Monks as “one of life’s good guys” who was “much loved”.
