Detectives investigating the murder of scrap metal dealer David Brickwood in Northampton have made a new arrest.
74-year-old David Brickwood was stabbed at his home in Lindsay Avenue in Abington in 2015.
He initially survived the attack and was able to call police for help but died a short time later.
A 51-year-old man from Northampton has been arrested on suspicion of murder.
Detective Inspector Phil Mills, from the East Midlands Special Operations Unit Major Crime Team, who is leading the investigation said:
Six people have previously been arrested during the investigation, but no one has been charged.