The blood of murder accused Steven Williams was found in at least three different locations in the flat where Joanna Hall was stabbed to death, a jury heard today.
Williams, aged 30, of Newell Hill, Marsh Road, Tenby, is on trial at Swansea crown court charged with stabbing Miss Hall 40 times in the early hours of March 16 last year.
He denies the charge.
Forensic scientist Emma Howes told the jury today how she examined Miss Hall’s flat in Cresswell Street, Tenby, after she had been airlifted to Swansea’s Morriston hospital, where she died 19 days later.
She said she found Williams’ blood in a bathroom sink, on Miss Hall’s mobile telephone and on a white T shirt—and there was only a one in a billion chance that it had come from someone else.
She said she would have expected the blood in the sink to have been washed away by normal usage unless it had been deposited only a short time before.
Mrs Howes added that it appeared that Williams had changed some of his clothing after the incident.
The jury has been told that after his arrest outside the flat it was noted that Williams had a bleeding injury to his left ear.
Mrs Howes also told how she found Miss Hall’s DNA on a kitchen knife.
Paramedic Paula Jeffrey, who was the first to treat Miss Hall, said when she arrived Miss Hall was conscious and able to answer questions.
“She was complaining that she could not breathe. Her blood pressure was very low and her pulse was weak and feeble.
“She said she was scared. It was decided the helicopter was needed, “she added.
Heath Willoughby, a nurse at Tenby Cottage Hospital, said Williams visited at 5.30pm on the evening before the stabbing, but not with an ear injury. Instead, he was complaining that he might have contracted a sexually transmitted disease.
She said Williams was a regular patient and she had treated him between 15 and 20 times.
The trial continues.