What do we know about British teen Jay Slater, missing in Tenerife for over a week?

The sudden disappearance of Jay Slater, a British teen missing for over a week attending a music festival in Spain's Canary Islands, has captured widespread attention online. Internet have fueled speculation and conspiracy theories, prompting concerns from Spanish police about the potential impact on the search efforts.
Jay Slater's case is being actively investigated by authorities, aiming to gather credible information amid the online buzz.
Here's what we know about missing British teen Jay Slater:
Jay Slater is a 19-year-old apprentice bricklayer from Lancashire in north-west England, went missing after attending a music festival on Spain's island on Tenerife on Sunday, June 16.
His friends raised the alarm after Jay Slater made a distress call to his travel companion, Lucy Law, saying that he was lost and attempting to walk back to their accommodation but urgently needed water.
Slater said that his phone battery was critically low at 1 percent before the call abruptly ended.
Last known location
Jay Slater and two friends attended a music festival at Papagayo nightclub in Playa de las Américas, a popular tourist destination in southern Tenerife.
Slater went missing after the festival, and his last known location was in the north-west part of the island, which includes a national park. Tenerife is the largest of the Canary Islands, located off the coast of West Africa.
The Rural de Teno park, located in this area, as "remote and wild," noting that its deep ravines and large mountains make it a challenging region for rescue teams to search.
What do we know so far?
On Sunday, June 16, Jay Slater and two friends attended the final day of the NRG music festival in Playa de las Américas. Early Monday morning, Jay was seen getting into a car with two men he met while on holiday. Around 7:30am, he tagged Parque Rural de Teno Buenavista del Norte in a Snapchat post. By 8:15am, he called his travel companion, Lucy Law, saying he missed a bus and planned to walk back, but the call cut out.
After Jay failed to return on Tuesday, June 18, his friends and local authorities began searching. On Wednesday, June 19, Spain's civil guard deployed drones, dogs, and a helicopter. A false lead in Los Cristianos briefly diverted the search but focus returned to Rural de Teno Park.
Thursday, June 20, saw intensified efforts from the Guardia Civil, mountain rescue, firefighters, and volunteers. Lancashire Police offered assistance on Friday, June 21, as teams focused on paths around Masca and two ravines, investigating near an apartment Jay had visited. The search continued in Masca on Saturday, June 22.
Buzz over internet
Speculation about missing Jay Slater has gone viral online, with number of Facebook groups discussing theories about his whereabouts. Some social media users have suggested that Slater was kidnapped or is in hiding, though police have not supported these theories.
Slater's mother, Debbie Duncan, expressed concern that the online chatter is negatively impacting the search. "They have actually said that there's too much noise, that's affecting it," she said, referring to the Spanish police's comments.
Several fundraising pages were created to support the search but were later suspended by GoFundMe due to concerns over the organizers' identities. A Facebook group reportedly set up by Slater's family stated that Ms Duncan did not want fundraising pages created.
Moreover, the admin of a Facebook page dedicated to helping the search reported that someone other than Slater had logged into the 19-year-old's Instagram account.