Biggest mistake criminal investigators have made in the past is not thinking a female is capable of stuff so to rule it out will be none logical on past history they is many types of female's that are capable of the same strength of a male..
"We are keeping an open mind. We may be looking for one perpetrator, there may be more."
On Sunday, the body of Anneli Alderton, 24, of Harwich, Essex, was found at Nacton. It follows the discovery of the naked body of Gemma Adams, 25, in a stream at Hintlesham on December 2 and that of Tania Nicol, 19, in a pond at nearby Copdock on December 8.
Since December 2, the bodies of five women have been found dumped in the area, prompting a massive manhunt by Suffolk Police.
Gemma and Tania were discovered five miles apart in the same stretch of water. Both were naked but the cause of their deaths is still unclear and there is no evidence to suggest either had been sexually assaulted.
Toxicology tests are being carried out on on the first two victims - Gemma Adams, 25, and Miss Nicol, 19 - to discover whether or not they had any substances in their bodies which could have played a part in their deaths. The causes of their deaths have not yet been revealed.
The third victim, Anneli Alderton, 24, was asphyxiated. Her naked body was found in Nacton last Sunday.
They also said a girl who had been reported missing has now been found. A police spokeswoman said officers had been told the girl had gone missing with her boyfriend.
However, she was later found safe and well.
Police yesterday refused to reveal how many individuals were in their sights for the Suffolk murders but sources suggested that the number was less than 50 — not all of them men who used prostitutes.
One of five prostitutes found murdered in Ipswich during the past two weeks was expecting a child, a police chief confirmed today.
Anneli Alderton, whose body was found in woods at Nacton on Sunday, was three months pregnant.
However, Jacqui Cheer, Suffolk’s Assistant Chief Constable, said detectives did not regard Miss Alderton's pregnancy as being of “relevance” to the inquiry.
"Miss Alderton was three months pregnant," said Mrs Cheer. "But we do not regard that as having any relevance to the inquiry - however sad it may be."
Mrs Cheer said detectives were making good progress in their hunt for the man thought to be the biggest serial killer seen in Britain in the past 25 years.