A new theory about the disappearance of Jay Slater has emerged after the police ended their latest search party for the missing British teenager who has not been heard from in two weeks.

       Ex-Scotland Yard and Met police officer Graham Wettone said "Lots of things just don't add up" and urged Spanish police, who have denied the help of British police, to look into "criminal" lines of investigation.

       He told MailOnline: " It seems to me on the face of it that they are just focusing on the mountain, but I would hope they are looking at other avenues and those include criminality. I've been following this case closely and discussing it with colleagues and it's certainly a very bizarre one, lots of things just don't add up."

       Just yesterday, the latest search effort was called off after a disappointing six volunteers showed up to help, but Jay's family have vowed to continue looking for him.

       A family source in the UK told The Sun : "They will not stop looking for Jay or giving up. They will be staying in Tenerife and trying to do all they can to keep momentum going and to find Jay.

       "They’ve been trying to get in touch with groups in Tenerife and beyond who specialise in missing persons. Jay’s family knew the search would eventually wind down. They get that. But it was a nightmare scenario they didn’t want to think about."

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