A 49-year-old man has been arrested on suspicion of murder as the search for missing teenager Gaia Pope continues.
It's believed the man arrested is known to Gaia and is from the Swanage area.
It follows the discovery of women's clothing in a field near Swanage on Thursday.
The owner of the clothes has not been yet been identified, but Dorset Police say that Gaia's family have been informed.
Two other people arrested on suspicion of murder, a 19-year-old man and a 71-year-old woman, have been released under investigation.
Dozens of police officers are searching large areas of woodland and fields close to Swanage in the hope of finding Gaia.
It follows the discovery by a member of the public of items of clothing south of Priestly Road in Swanage.
Dorset Police say the items of clothing are similar to those believed to have been worn by Gaia.
Police have released CCTV images of Gaia taken less than an hour before she disappeared.
Gaia, from Langton Matravers, was staying at an address in Swanage when she disappeared on the afternoon of Tuesday 7 November 2017.
Less than an hour before her last confirmed sighting at 3.39pm, she was being driven between Langton Matravers and Swanage by a family member when they stopped off for fuel at St Michael's Garage on Valley Road in Swanage.
Gaia went into the garage to buy an ice cream at around 2.55pm before leaving.