Police are searching for Karl Lamblin following a stabbing death in Keysborough.
Homicide Squad detectives are keen to speak to the 32-year-old about the Saturday 18 June incident.
Police responded to reports that a man had been stabbed at an Olive Grove address just after 7.30pm.
Paramedics tried to revive the 48-year-old man, but he died at the scene.
On his Facebook page, Yahn O’Donnell confirmed that the victim was his brother Paul O’Donnell.
Investigators believe Lamblin might be able to assist with their inquiries, and urged him to hand himself in.
Police believe he may be frequenting the Lilydale and Mount Evelyn areas.
Call Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au.
