Police say they are linking the murders of two prostitutes after the body of a woman found in Suffolk was confirmed as that of missing Tania Nicol.
Tania Nicol was last seen in Ipswich
Det Supt Andy Henwood said there were "obvious similarities" between the death of the 19-year-old and that of another prostitute Gemma Adams, 25.
Ms Adams' body was discovered in a brook near Hintlesham on 2 December.
Ms Nicol was found on Friday near Copdock Mill, in the same water stream. The causes of death are not yet known.
Police said further tests were needed to determine the causes.
The women, who were friends and lived in Ipswich, had been working as prostitutes in the town's red light district.
Det Supt Henwood said they were treating the deaths as "linked investigations".
"There are obvious similarities between Tania's and Gemma Adam's disappearances and subsequent deaths," he said.
"However we will be seeking further information from specialist advisers to confirm this view."
Ms Adams disappeared after leaving home on 15 November to go to work. Ms Nicol went missing on 30 October.
The body of Gemma Adams was found last week
Their naked bodies were found about two miles apart.
Det Supt Henwood said inquiries were continuing to "try to ascertain where and when Tania's and Gemma's bodies were placed in the water and the circumstances of their deaths".
He said officers were seeking to trace the clothing they were wearing on the nights they went missing.
Post mortem examinations have been carried out on both bodies but police said more tests were now needed.
They said there was no evidence that either woman had been sexually assaulted.
Det Supt Henwood added: "The way the girls lived their lives is a significant issue for us to investigate.
"We are aware of their drug use and that is a line of inquiry we are pursuing."
Simon Aalders, the co-ordinator of the Suffolk Drug Action Team who works with prostitutes in Ipswich, said women working in the area were worried.
"Some women are stopping their activity but some aren't and I think that what that shows really is that a lot of these women are in a desperate - extremely desperate - situation.
"Things like drug dependency and poverty are really pushing women into this sort of activity."