Spanish rescue teams have ramped up their search for the missing British teenager, Jay Slater, who was last seen in Tenerife on Monday. Well, let's go live now to Shinji Mawarike. Tell us a bit more, Shinji. Morning to you. A bit about the rescue effort today and what we might see?

Well, yesterday, that rescue effort entered what was called full mobilization, involving a number of emergency services, from the fire brigade to the Civil Guard and Mountain Rescue. They were deploying helicopters, drones, and sniffer dogs, which you can expect to once again happen today as the search enters its fifth day. Another part of that search is the fact that a number of Jay's friends and family, including his mom, Debbie, have come out to Tenerife to join the search effort. But I think it's worth talking about the conditions that they'll be facing. We're quite close right now to Los Cristianos, which is where he was meant to be staying, which is quite close to the tourist strip, and it's flatter ground than the south of the island. But where he was last spotted, where the search is taking place, is in the north of the island on higher ground in rugged, arid conditions. That makes any search and rescue operation difficult in temperatures that could reach up to 30 degrees. Here in Tenerife, they've had low rainfall and record temperatures. That is difficult for anyone who's gone missing. We understand from his last phone call of a friend Lucy that Jay was struggling, that he had 1% phone battery, he'd pricked his foot on a cactus, that he didn't have any water.

He would have been out there, obviously, trying to seek shelter in those sorts the search operation enters its fifth day, his friends and family will be hoping for good news. But as I say, these are not the conditions you want to go out in or the ideal conditions for a search and rescue operation.