A 19-year-old Kennington man has been released after his arrest over a fatal stabbing at the One Tree Hill lookout on Friday.
Emergency services were called to reports of a man with stab wounds at the lookout at about 11.20pm.
The man was treated by paramedics, but died at the scene.
A 19-year-old Kennington man was arrested on Saturday morning in Flora Hill.
Police said the man was assisting detectives with their enquiries.
He was released on Sunday afternoon without charge, pending further enquiries.
Investigators believe they have identified all the people involved in the incident.
They are not looking for any further parties.
Detectives have also confirmed that all parties involved were known to each other.
Homicide Squad detectives are continuing to investigate the death.
Detectives have encouraged anyone with information about the incident to contact Crime Stoppers on 1800 333 000 or to visit crimestoppers.com.au
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