In the UK further forensic tests are to be carried out on the bodies of two prostitutes, found in the same stretch of water, to establish how they died.
Nineteen-year-old Tania Nicol and twenty-five-year-old Gemma Adams died after vanishing from the red light district of Ipswich.
Ms Nicol vanished on October 30. Her body was discovered in the water on Friday, around five miles away from the city's red light district.
Ms Adams, who disappeared in the early hours of November 15, was found in a brook two miles from Copdock at Hintlesham on December 2.
Both women were discovered naked, but there's no evidence either had been sexually assaulted.
Detective Superintendent Andy Henwood has appealed for any of their clients to come forward