Police were called to an address in Swan Street, Werribee about 12pm this afternoon after reports of an altercation between two men.
On arrival officers found a man in his 50s with a puncture wound to his stomach. He was taken to hospital with non-life-threatening injuries.
The other man, believed to be in his 60s, was also taken to hospital for treatment.
A crime scene was set up at one of the addresses on Swan Street while Police interviewed many neighbours, one witness at the scene mentioned that a knife was used.
The investigation into the incident is ongoing.