Calendar An icon of a desk calendar. Cancel An icon of a circle with a diagonal line across. Caret An icon of a block arrow pointing to the right. Email An icon of a paper envelope. Facebook An icon of the Facebook "f" mark. Google An icon of the Google "G" mark. Linked In An icon of the Linked In "in" mark. Logout An icon representing logout. Profile An icon that resembles human head and shoulders. Telephone An icon of a traditional telephone receiver. Tick An icon of a tick mark. Is Public An icon of a human eye and eyelashes. Is Not Public An icon of a human eye and eyelashes with a diagonal line through it. Pause Icon A two-lined pause icon for stopping interactions. Quote Mark A opening quote mark. Quote Mark A closing quote mark. Arrow An icon of an arrow. Folder An icon of a paper folder. Breaking An icon of an exclamation mark on a circular background. Camera An icon of a digital camera. Caret An icon of a caret arrow. Clock An icon of a clock face. Close An icon of the an X shape. Close Icon An icon used to represent where to interact to collapse or dismiss a component Comment An icon of a speech bubble. Comments An icon of a speech bubble, denoting user comments. Ellipsis An icon of 3 horizontal dots. Envelope An icon of a paper envelope. Facebook An icon of a facebook f logo. Camera An icon of a digital camera. Home An icon of a house. Instagram An icon of the Instagram logo. LinkedIn An icon of the LinkedIn logo. Magnifying Glass An icon of a magnifying glass. Search Icon A magnifying glass icon that is used to represent the function of searching. Menu An icon of 3 horizontal lines. Hamburger Menu Icon An icon used to represent a collapsed menu. Next An icon of an arrow pointing to the right. Notice An explanation mark centred inside a circle. Previous An icon of an arrow pointing to the left. Rating An icon of a star. Tag An icon of a tag. Twitter An icon of the Twitter logo. Video Camera An icon of a video camera shape. Speech Bubble Icon A icon displaying a speech bubble WhatsApp An icon of the WhatsApp logo. Information An icon of an information logo. Plus A mathematical 'plus' symbol. Duration An icon indicating Time. Success Tick An icon of a green tick. Success Tick Timeout An icon of a greyed out success tick. Loading Spinner An icon of a loading spinner.

Murder accused’s DNA on bra of woman found in lake 35 years ago, court hears

Murder accused’s DNA on bra of woman found in lake 35 years ago, court hears

A suspected murderer’s DNA is on a sample taken from the bra of a woman found bound and gagged in a lake 35 years ago, a court has heard.

Donald Robertson is accused of killing 26-year-old Shani Warren, whose body was found in Taplow Lake, Buckinghamshire, in 1987.

Forensic scientist Rosalyn Hammond carried out tests on samples taken from the crime scene more than three decades ago, Reading Crown Court heard on Monday.

Ms Hammond examined tapings taken from the victim’s clothing in 1987, and she also tested a piece of cloth which had been used to gag her.

Her results suggest “DNA attributable to Robertson” was present on a sample taken from her bra, the court heard.

She also said the gag appeared to have had a blood stain and possibly semen residue on it, as well as “yellowish, gritty staining”, jurors were told.

However, a number of other unknown persons’ DNA was also found on the samples.

Ms Hammond said this could be caused by people touching or wearing the clothing before Ms Warren died, or by scientists handling them in labs.

For instance, she told the court, from her observation, gloves would “rarely” have been worn in laboratory examinations in the 1980s.

Ms Hammond hypothesised that the defendant’s DNA could have somehow “inadvertently” contaminated the taping in a lab after it was taken from the bra.

But she said she had seen nothing to indicate this had happened, the court heard.

Ms Hammond carried out a chemical test on the gag, which she said showed the presence of acid phosphatase, an enzyme which is found in semen.

Ms Hammond added: “I refer back to my conclusion about the AP [acid phosphatase] reaction where I said, in my opinion, this suggests that AP constituent of semen was still present on the cloth.”

Michael Ivers, QC, for the defence, highlighted that the AP enzyme is not just found in semen, citing vegetables, vomit, saliva, pond vegetation or lab contamination as alternative sources.

He also queried the length of time before the results showed up in the chemical test.

The court heard AP results can sometimes show within 10 minutes but this test was left overnight, before a reading was recorded the next morning.

Prosecutor John Price QC told the court: “As everybody knows in this particular case, that gag spent several hours in the waters of Taplow Lake.

“If semen or seminal fluid was deposited on it shortly before it went into the water, would you have expected the water to have diluted its presence?”

Ms Hammond said this would likely be the case.

Ms Warren’s GPs, Dr Peter Kersely and Dr Susan Lynch, had provided statements after her death saying they did not think she was suicidal, the court heard.

Their view was supported by Dr Richard Hamilton, of Broadmoor Hospital in Berkshire, who never met Ms Warren but reviewed her diaries for the inquest into her death.

Police reportedly initially treated her death as suicide, despite the fact she was found bound and gagged.

Ms Warren’s former housemate, Katherine Whitehouse, had said in a statement that she was “an extrovert who liked going out enjoying herself”, the court heard.

A neighbour described her as “bubbly and happy”.

Robertson, now 66, who was not in court, denies the false imprisonment, indecent assault and murder of Ms Warren between April 16 and April 19 in 1987.

Robertson also denies the kidnap and rape of a 16-year-old girl, who cannot be named for legal reasons, on July 16, 1981.

This alleged rape took place less than four miles away from where Ms Warren’s body was found, the court previously heard.

Robertson also has convictions for raping two girls aged 14 and 17 in separate incidents, and was convicted of burglary with intent to commit rape and kidnap following an incident in Slough in April 1990.

Robertson was charged in October 2021 over Ms Warren’s death.

The trial continues on Tuesday.

Already a subscriber? Sign in

[[title]]

[[text]]