A four-year-old boy cried "Daddy's killed Mummy" after his soldier father launched a fatal knife attack on his mother, a court has heard.
Leanne McNuff, 24, was stabbed repeatedly in her upper body as she tried to fight off Ian Lowe, 25, a Lance Corporal in the Army, the court heard.
One stab wound went completely through her neck and another through her arm as she vainly tried to defend herself and Lowe also repeatedly stamped on her face, Manchester Crown Court was told.
The couple's son, Jaden, was at Miss McNuff's home in Droylsden, Greater Manchester, at the time of the attack in March this year.
When Miss McNuff's brother Ryan dashed to help his dying sister, the youngster told him: "Daddy's killed mummy", the court heard.
Lowe, originally from Droylsden but based at the Somme Barracks in Catterick, was on bail for allegedly assaulting Miss McNuff at the time of the killing.
He admits manslaughter but denies murder.
In a defence statement he claims on the day of the attack he learnt Miss McNuff had been unfaithful to him while they were still in a relationship, that she intended to leave the area and take Jaden with her and that she had aborted a child the defendant believed to be his.
Hours before the killing, Lowe, who had hacked into Miss McNuff's Facebook account, told a friend he had found out about her seeing someone else and having an abortion, the court heard.
He claims he killed Miss McNuff after losing his self control when she came at him with a knife.
The court heard Lowe fled to his mother's house, confessing to her: "I've just killed Leanne...I've stabbed her four times and I stamped on her face.
"They can't prove I've done anything and they can't prove it was me."
The trial, expected to last up to three weeks, continues.
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