Volunteers with experience in rough terrain will go over areas previously covered by police in search for 19-year-old

Volunteers with experience navigating tough terrain are in Tenerife to help the Spanish police in the search for a missing British teenager.

Jay Slater, from Oswaldtwistle in Lancashire, was last heard from on 17 June when he called a friend to say he had no water and only 1% battery left on his phone.

Police had called for volunteers to help in search of rocky wildness close to where teenager went missing

A “mass search” for the missing teenager Jay Slater is due to begin in Tenerife on Saturday after police called for more volunteers to take part.

Slater, from Oswaldtwistle in Lancashire, was last heard from on the morning of Monday 17 June when he texted a friend to say he had no water and only 1% battery left on his phone.

Officers search around two structures at bottom of ravine in rugged Rural de Teno park

Outbuildings close to where the missing teenager Jay Slater’s phone last picked up signal are the current focus of a police search in Tenerife.

As the hunt for the 19-year-old continued for a seventh day on the Canary island, his mother thanked those who had together donated more than £30,000 to a GoFundMe page, exceeding its target.