Three people have been arrested in connection with the disappearance of a teenager from Gwynedd, north Wales, who vanished two weeks ago.
Frantisek 'Frankie' Morris, 18, from Llandegfan in Anglesey, was last seen near the Vaynol Arms, Pentir, on May 2, pushing a bike.
Mr Morris had attended a party in Waunfawr, near Snowdonia National Park, the night before his disappearance.
The teen was last seen near the Vaynol Arms, Pentir, on May 2, pushing a bike
North Wales Police have revealed that one man has been arrested on suspicion of causing death by dangerous driving, while a second man and a woman have been arrested on suspicion of perverting the course of justice.
Authorities have launched an appeal for drivers in the area at the time to come forward, in the hope that they will be able to help solve the mystery surrounding the teen's disappearance.
They are also asking party-goers who attended the rave in Waunfawr to provide information.
Pictures have been released of the cars in the area at the time.
Earlier this week, police released an image of Mr Morris pushing his bike near the Vaynol Arms pub in Pentir taken around the time he was last seen.
The bike, which reportedly had a puncture, was found near the pub on May 9.
After his disappearance, the teenager's mother, Alice Morris, said in a dedicated Facebook group set up to help share information about his whereabouts that she fears something bad happened to him.
Police in North Wales are urgently appealing for information relating to the disappearance of 18-year-old Frankie Morris (pictured left and right) who has not been seen since May 2
Mrs Morris is said to live in the Czech Republic and cannot fly over to the UK to join the search for her son without taking two Covid tests and quarantining for 10 days.
She wrote: 'I do think that he visited one of his friends in Bangor and something bad probably happened to him there.
'I have been asking the police to investigate the people who he knows in Bangor and go to their houses to check but the response seems to me to be a bit slow.
'I think they should make it a priority to investigate all his friends in Bangor.'
Chief Inspector Owain Llewelyn said: 'I would now like to make a further appeal to the drivers of the cars in the images to come forward, as they may hold vital information which will assist us with our enquiries.
Police released images of a number of cars in the hope the drivers would come forward, as they may hold vital information over the whereabouts of Mr Morris
'Due to the ongoing investigation, the road from Pont Felin, Pentir heading towards Waen Wen will be closed until further notice.
'Motorists and the public are advised to avoid the area and use alternative routes.'
Chief Insp Llinos Davies previously said: 'I would like to appeal directly to Frankie and want him to know that our only concern is to know that he is safe and well.
'I urge Frankie or anyone who knows of his whereabouts to make contact with us. We will need to check on Frankie's welfare, but his confidentiality and wishes will be respected.
'We continue to be concerned about Frankie, and are still utilising a considerable amount of both police and partner agency resources, both of which have been dedicated to finding Frankie for nearly a week.
The Vaynol Arms Pub in Pentir, Bangor, where the teen was last seen
'We are working closely with Frankie's family to explore every possible line of enquiry at this difficult time. If you have any information regarding Frankie's whereabouts, please get in touch.'
Anyone with information is advised to contact police on 101.