Jay Slater mystery: Police investigating if teenager's background is 'relevant' to disappearance

A huge search mission was launched as mountain rescuers and Slater's family continue scouring the Spanish island.

It has since been revealed that the missing teenager has a criminal history and was handed an 18-month community order with 25 days of rehabilitation activities and 150 hours of unpaid work for violent disorder.

"In cases of missing people it's natural to investigate their background in case it's relevant to the hunt," a source told the MailOnline.

"This case is unusual as it's been a week and there has been no sighting or leads on him at all and searches have thrown up no clues.

"We have to consider the possibility of something else happening."

His Mum Debbie told the Daily Mail: "What happened in court is irrelevant, he was in the wrong place at the wrong time.

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"What matters more than anything is that my son is missing and we need to find him."

The 19-year-old travelled to an Airbnb in the village of Masca on Sunday, June 16.

The apprentice bricklayer spoke to his friend Lucy Law at 8am local time last Monday to say he had missed his bus, his phone had just one per cent battery and he would walk home instead.

His last known location was in the mountainous Rural de Teno Park - an area popular among hikers.

It comes as specialised police dogs from Madrid were called in to help search for the missing teenager.

Tenerife police said: "The Civil Guard continues with the search device for the young British man who disappeared in the Masca neighbourhood, belonging to the municipality of Buenavista del Norte (Tenerife), in which different units of the Civil Guard participate.

"In addition, today several Canine Guides of the Civil Guard dispatched from Madrid with their canine agents specialised in the search for people on large areas of land, belonging to the Cynological Service of the Civil Guard."