Homicide Squad detectives have arrested a 26-year-old man following the fatal stabbing of another man in Geelong yesterday.
The 20-year-old was allegedly stabbed during an altercation on Little Malop Street about 5.30am.
The Corio man was taken to hospital where he later died.
A Colac man attended a police station this morning where he was taken in custody and will be interviewed by investigators.
Two other Colac men, aged 23 and 26, self-presented at a hospital with non-life-threatening injuries yesterday morning.
They will be interviewed at a later date.
The exact circumstances surrounding the incident remains under investigation.
Anyone who witnessed the incident, with CCTV/dashcam footage or information that could assist police is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at crimestoppersvic.com.au