The trial of a man and woman accused of murdering an Irish man in the United States in August 2015 has heard details of blood spatters found on clothing from both of the accused.

Molly Martens-Corbett, 33, and her 67-year-old father Thomas Martens are accused of killing 39-year-old Jason Corbett at his home in Wallburg, North Carolina on 2 August 2015.

Both have pleaded not guilty to those charges, claiming self-defence.

Stuart H James, a bloodstain pattern analyst, said that bloodstain patterns on boxer shorts and a shirt belonging to Mr Martins were consistent with the wearer having been in close proximity to Mr Corbett's at the time blows to his head were struck.

Mr James also testified that stains in Ms Martens-Corbett’s pyjamas revealed the wearer was also in close proximity to Mr Corbett as blows were struck to his head.

Under cross-examination by a lawyer representing Mr Martens, Mr James said he did not go to the house and was not provided with dimensions of the rooms or hallway.

Jones Byrd, for Mr Martens, established that Mr James could not say who moved a vacuum cleaner at the Panther Creek residence, which he had said indicated alteration of the scene.

He commented that dozens of law enforcement officers and paramedics moved in and out of the scene, saying any one of them could have moved it.

Mr James also told the court that he felt blood testing was sufficient in the case.