A 28-year-old man has been found guilty of the murder of Amy Farrell in Cavan town last year.
A jury found Brendan McGahern, of Corlismore in Co Cavan, guilty after retiring to consider its verdict this morning.
The court had heard that the dead woman had given evidence against McGahern's friend at Virginia District Court in Cavan the day before she was murdered.
McGahern was in court that day when Amy Farrell gave evidence against his friend, who pleaded guilty to assaulting her and stealing her car.
On the day of the murder, McGahern had been drinking and, at around 8 o'clock that evening, he went to her house when she was eating with a friend.
He asked to speak with her and she went outside.
Her friend heard her screaming his name and, when he went out, he saw her being attacked by the 28-year-old, who had a knife.
He was heard saying: "Don't f*** with us."
The mother-of-one died on her lawn from multiple stab wounds.
The jury retired this morning and returned just over an hour later with a guilty verdict.