Two men have been arrested by police investigating the murder of a 42-year-old man stabbed to death in his back garden in Liverpool.
Colin Hughes was attacked in Old Swan in September 2010 as he went to investigate a noise at the door.
Two men, aged 18 and 21, from Old Swan and Huyton, were detained on Tuesday and are being questioned.
It brings the total number of people arrested during the inquiry to six. No-one has been charged.
Mr Hughes had been playing cards with his fiancee Paula Greenwood when they heard the glass in the back door smash at about 0045 BST on 21 September.
Ms Greenwood went to call the police while Mr Hughes, a chef at a local pub, went to investigate. She later found him lying face down in the garden.
He was taken to hospital but died soon afterwards. A post-mortem examination found he died from a single stab wound.