Boy tells court of fatal stabbing

Bernard Evans suffered wounds to his chest and arm

A teenager has told a jury that he saw his sister fatally stab their mother's boyfriend.

Wayne Williams, 16, told Swansea Crown Court he pushed Maxine Williams away from Bernard Evans after seeing her stab him in the side of his stomach.

Ms Williams, 22, denies murdering Mr Evans, 42, at his home in Ammanford, Carmarthenshire, in January.

Her brother was interviewed on video by police and the interview was played to the jury on the trial's second day.

Wayne Williams said he heard a commotion downstairs and looked over the bannister. He said he saw his sister and Mr Evans arguing.

He described how he went downstairs and saw Ms Williams slash a photograph of herself with a knife.

He fell back and put his head up against the washing machine. I was petrified. Wayne Williams, interviewed by police

"He (Mr Evans) said to her, 'Don't do that, Max, it's your school photo.'"

Wayne Williams said at one stage Mr Evans pushed his sister to the floor and she got up and stabbed him in the stomach.

"He fell back and put his head up against the washing machine. I was petrified. Maxine said to me 'Don't worry, I won't do anything to you."

The teenager described as his mother Julie appeared downstairs and together they pushed his sister away from Mr Evans, who was dying from his wounds.

"My mother told me to go to the telephone box now. I ran as fast as I could," he added.

The jury has heard emergency calls made following the stabbing

Asked by the police officer how he knew Ms Williams had been responsible for the stabbing, he replied, "She was the only one with a knife."

Elwen Evans QC, prosecuting, has alleged Ms Williams stabbed Mr Evans twice during a violent incident.

The episode, alleged Miss Evans, involved Ms Williams throwing knives at Mr Evans as well as stabbing him.

Miss Evans said that in January Ms Williams was living in a hostel in Pembrey, Carmarthenshire, but regularly visited the home of her mother Julie, brother Wayne, and her mother's partner Bernard Evans in Ammanford.

Alcohol and heroin

During 999 calls played to the jury Ms Williams could be heard in the background saying, "I'll eat him. Mam, I've killed him. Mam, I'm going to eat him."

Miss Evans said after her arrest Ms Williams told police she had been high on alcohol and heroin, and claimed to have taken two bags or wraps.

But Miss Evans said toxicological tests revealed no trace of the drug.

She described Ms Williams' claim as an example of her willingness to say things that were untrue.

The trial continues.