Two men have been arrested on suspicion of the murder of a teenager whose body was found on the royal estate at Sandringham.
The body of Alisa Dmitrijeva, 17, was discovered by a dog walker at Anmer in Norfolk on New Year's Day.
The men, aged 28 and 31 and from Wisbech, Cambridgeshire, were arrested in King's Lynn and later released on bail.
Alisa was reported missing from Wisbech on 6 September, 2011.
In March, Norfolk Police recovered the car Alisa was last seen in at a Wisbech scrapyard.
The Latvian-born teenager was said to have been seen in the Lexus in King's Lynn at 00:15 GMT on 31 August.
Police inquiries have suggested she was at a party in a beach car park 10 miles away in Snettisham, Norfolk, early on the same day.
Police said a DNA profile and a palm print identified Alisa's remains, which were found in a copse on arable land.
After Alisa's body was discovered, her family said their "hearts have been broken in the way Alisa was taken from us" and appealed for witnesses to come forward.
Multi-lingual posters were created in an attempt to get information from the Lithuanian and Latvian communities around Wisbech.