A man who was jailed for killing his ex-wife has admitted murdering his former girlfriend while out on licence. Philip Fraser, 50, stabbed Donna Forrest with a knife and struck her with a claw hammer during the attack in Balintore, near Tain, in April. Fraser, of Balintore, had killed his ex-wife Katherine Scafe in 1997. At the High Court in Edinburgh, he was given another life sentence and ordered to serve at least 20 years in prison for the murder of Ms Forrest, 30. Judge Lord Menzies told Fraser that he faced never being released from prison. The judge said: "You murdered her in an act of appalling violence and barbarity. "The terrible thing which you did to Donna Forrest is made all the worse by your dreadful criminal record." He added: "After she ended that relationship you pestered her, upset her and made a nuisance of yourself, and then you murdered her. "You are a very dangerous man." Fraser was jailed for life at Liverpool Crown Court for murdering mother-of-three Ms Scafe, formerly of Tain. He was freed on licence in February 2008 and moved to Balintore, where he lived close to mother-of-one Ms Forrest. Fraser kept their relationship a secret from his supervising officer, but Ms Forrest broke it off and later began seeing another man. The court heard that she told friends he was pestering her. She had been in contact with police and also met a support worker from Women's Aid. The night before her murder, Ms Forrest and Fraser had been drinking separately at a local pub. Advocate depute John Scullion, prosecuting, said just after midnight Fraser armed himself with a hammer to break into her home. He headed for her bedroom and found Ms Forrest and a man in bed. The man was told to leave, which he did, and Fraser and Ms Forrest went down to the kitchen.