A man questioned by over the disappearance of missing 17-year-old Georgia Williams has now been arrested on suspicion of her murder.
The man named locally as Jamie Reynolds, 22, was originally arrested at a Glasgow hotel on suspicion of kidnapping the Wellington teenager, who has been missing since 26 May.
West Mercia Police have now said that following "developments in the investigation", the suspect is now arrested on suspicion of murder.
It is reported Reynolds was "hopelessly in love" with the 17-year-old, but she rejected him on Valentine's Day this year.
Police have still not found the body of the RAF cadet.
Supt Nav Malik said: ""The arrest of the suspect for murder follows developments in the investigation since yesterday afternoon but for operational reasons and because we have someone in custody I am not able to give any further details about that at this time.
"However I would like to stress that Georgia Williams has still not been found and achieving that is still the primary focus of our investigation. Therefore we still urgently want people to come forward and tell us if they have seen or had any contact with her since 7.30pm on Sunday when she left the family home."
Malik added that the suspect and Williams were "friends, both in terms of meeting in locations frequently and discussing things on social media".
Police have renewed appeals for help in their search for the former pupil at Ercall Wood Technology College in Telford.
Williams, a daughter of a serving West Mercia police officer, was described as white, 5ft 3ins, slim and with long, dyed, red hair.
She was last seen wearing a waist-length black leather jacket over a white T-shirt which has a London bus motif on it. She was also wearing black, skinny jeans and flat, black suede slip-on shoes.
Police also want to hear from anyone who may have seen a silver Toyota Hiace 300 GS panel van, registration CX06 ASV, which took a route from Wellington to Oswestry in Shropshire before moving on to Rhyl, Chester, Kendal in Cumbria and then Glasgow.
Malik added: "If you think you saw this vehicle either en route or parked somewhere between Sunday evening (26 May) and when we recovered it in a car park in Glasgow city centre yesterday then please let us know.
"The vehicle had ladders on the roof and we know it was driven by the suspect prior to his arrest."
"The smallest scrap of detail could be vital to our enquiries so even if you think it may not be important please tell us so that we can check it out."