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Accused DNA 'found on Vicky body' Accused DNA 'found on Vicky body'
(30 minutes later)
Traces of DNA belonging to the man accused of killing Vicky Hamilton were found on the schoolgirl's body, a murder trial has heard.Traces of DNA belonging to the man accused of killing Vicky Hamilton were found on the schoolgirl's body, a murder trial has heard.
Forensic scientist Nicola Clayson also told the High Court in Dundee that a knife discovered in Peter Tobin's former home had traces of Vicky's DNA. Forensic scientist Nicola Clayson told the High Court in Dundee that partial DNA traces taken during a post mortem revealed a connection to Peter Tobin.
Ms Clayson said that tissue found on the dagger was most likely the 15-year-old's skin. Ms Clayson also said that a knife discovered in Mr Tobin's former home in Bathgate had traces of Vicky's DNA.
Peter Tobin, 62, denies murdering the Falkirk schoolgirl in February 1991.Peter Tobin, 62, denies murdering the Falkirk schoolgirl in February 1991.
He has lodged a special defence of alibi, claiming he was in Portsmouth when she disappeared.He has lodged a special defence of alibi, claiming he was in Portsmouth when she disappeared.
Ms Clayson said the chances of the tissue on the knife coming from a female other than a relation of Vicky Hamilton were one in more than one billion. Giving evidence on the 17th day of the murder trial, the forensic expert said that partial DNA profiles were gathered from two intimate swabs during examinations of Vicky's remains.
The knife was found in the attic of the house in Robertson Avenue in Bathgate, where Mr Tobin once lived. In the first instance, a profile was obtained from four out of 20 DNA sites, and on the second swab the profile was taken from seven sites, the witness said.
The chance of the DNA on the first swab coming from someone other than and unrelated to Mr Tobin was estimated at one in 114, the court was told.
Ms Clayson added that the chance of the DNA on the second swab coming from someone else was put at one in 34,000.
Asked about the possible source of the DNA, Ms Clayson told the court: "In my opinion it's most likely to have originated from semen."
Ms Clayson had earlier told the court that tissue found on a knife discovered at 11 Robertson Avenue, where Mr Tobin once lived, was most likely Vicky Hamilton's skin.
She said the chances of the tissue on the knife coming from a female other than a relation of Vicky Hamilton were one in more than one billion.
Vicky was last seen in the West Lothian town on 10 February 1991.Vicky was last seen in the West Lothian town on 10 February 1991.
Her remains were discovered after being wrapped in bin bags and buried in the garden of a house in Margate, Kent in November last year.Her remains were discovered after being wrapped in bin bags and buried in the garden of a house in Margate, Kent in November last year.
The chargesThe charges
Mr Tobin is accused of abducting Vicky and taking her to Robertson Avenue in Bathgate on 10 February 1991, which the Crown alleges was then occupied by him.Mr Tobin is accused of abducting Vicky and taking her to Robertson Avenue in Bathgate on 10 February 1991, which the Crown alleges was then occupied by him.
The charge also alleges that there or elsewhere he drugged her, struggled with her, compressed her neck, indecently assaulted her and murdered her.The charge also alleges that there or elsewhere he drugged her, struggled with her, compressed her neck, indecently assaulted her and murdered her.
He is also accused of attempting to defeat the ends of justice.He is also accused of attempting to defeat the ends of justice.
It is alleged that he concealed Vicky's body and removed and disposed of a number of items of her clothing and footwear.It is alleged that he concealed Vicky's body and removed and disposed of a number of items of her clothing and footwear.
He is also accused of cutting her body in two and wrapping it in coverings and bin bags.He is also accused of cutting her body in two and wrapping it in coverings and bin bags.
Then, allegedly aware that police were conducting a missing person's inquiry, Mr Tobin is said to have put Vicky's purse under a portable cabin to mislead police into believing she had run away from home.Then, allegedly aware that police were conducting a missing person's inquiry, Mr Tobin is said to have put Vicky's purse under a portable cabin to mislead police into believing she had run away from home.
Mr Tobin denies all the charges against him and has lodged a special defence of alibi, saying that between 1700 GMT and midnight on 10 February, 1991, he was in the Portsmouth area and was thereafter travelling to Scotland, arriving in Edinburgh at 0630 GMT the following day.Mr Tobin denies all the charges against him and has lodged a special defence of alibi, saying that between 1700 GMT and midnight on 10 February, 1991, he was in the Portsmouth area and was thereafter travelling to Scotland, arriving in Edinburgh at 0630 GMT the following day.
The trial, before Lord Emslie, continues.The trial, before Lord Emslie, continues.