Blood staining found on a reflective jacket in Steve Wright's home could have come from Paula Clennell and Annette Nicholls, the court heard today.The jacket was found hanging in the hallway at Wright's property in London Road, Ipswich.

Blood staining found on a reflective jacket in Steve Wright's home could have come from Paula Clennell and Annette Nicholls, the court heard today.

The jacket was found hanging in the hallway at Wright's property in London Road, Ipswich.

Dr Peter Hau, a forensic scientist with an expertise in DNA profiling, confirmed that “small amounts of light blood staining” were found in three areas.

The court heard blood found on the upper back of the left sleeve could have come from Miss Clennell.

The chances that it came from someone else were one in a billion, Dr Hau said.

Another spot where blood was found was also tested. Dr Hau said it was possible DNA profiling could have come from Wright and Miss Clennell.

Blood found on the lower right sleeve of the jacket could have come from Annette Nicholls, the court was told.

The chances it came from someone else was one in a billion, Dr Hau said.

Dr Hau said he believed each stain came from direct contact and not blood being sprayed on to the surface of the jacket.

“Contact occurs whereby a surface wet with blood has come into contact with another surface unstained, or vice-versa,” he said.

Prosecutor Peter Wright QC also asked Dr Hau if semen was found on the yellow reflective jacket.

Dr Hau replied: “Semen-staining was on the mid upper front and front of the left shoulder and on the back of the left shoulder.”

The jury heard that the semen stains on the reflective jacket were tested for DNA.

Dr Hau said: “A profiling result obtained from the three semen stains tested show that the semen or DNA could have originated from Mr Wright.”

He said profile results showed another cellular component. The profile matched that of Miss Clennell's - and the match probability was one in a billion, the court heard.

Dr Hau was asked whether DNA from a man called Tom Stephens was found on the jacket. “No,” he replied.

He also said no DNA profiles other than Wright, Miss Clennell and Miss Nicholls were discovered.

A pair of black and white gloves were recovered from the reflective jacket.

The inside and the outside of the gloves were found to be semen stained, the court heard.

Low level DNA which could have come from Wright was found on the right glove. Dr Hau said it was not possible to say if the DNA came from the semen or another cellular material.

The thumbs of the left hand and right hand glove showed the DNA profile of more than one person and Dr Hau said the profiles could have come from Wright and Miss Clennell.

Dr Hau said he subtracted Wright's profile from the DNA and was left with an incomplete profile which could match Ms Clennell's.

He said it was most likely the semen was deposited on to the glove while it was wet.

Dr Hau said: “There is very strong support for the view that Mr Wright was wearing the semen-stained gloves when in contact with Miss Clennell.”

A lumber-jack style coat was also recovered from Wright's home after his arrest.

Dr Hau said there was a possible indication of semen staining on the right breast pocket but it could not be confirmed.

Two pairs of trousers and tracksuit bottoms were examined, as well as the inside and outside of Wright's Ford Mondeo, and no semen was found, the court heard.

No semen from Wright was found inside the bodies of three of the prostitutes either - but they may still have had sex, Dr Hau said.

He was asked by Mr Wright if his examination of internal swabs taken from Anneli Alderton, Miss Nicholls and Miss Clennell found any semen that could have come from the defendant.

Dr Hau replied: "No semen that could have come from Mr Wright was found on these swabs".

But he added: "The absence of semen on these swabs does not mean that sex did not take place between Steve Wright and these females, as it is possible to have sex without the deposition of semen in the vagina."

The court heard yesterday that a full DNA profile of Wright was found on the bodies of the three women.

No positive DNA findings were discovered on Tania Nicol and Gemma Adams, but this was expected as their bodies had been immersed in water, Dr Hau had said.

Wright, 49, of London Road, Ipswich, denies murdering Tania Nicol, 19, Paula Clennell, 24, Anneli Alderton, 24, Gemma Adams, 25, and Annette Nicholls, 29, between October 29 and December 13, 2006.

The trial continues.