Police have arrested a man following the death of another man at a home in Melbourne's west.

A 46-year-old man was arrested at the scene in McGregor Court, Sunshine West, after the victim's body was discovered just after 8.30pm on Saturday.

A woman also found at the scene was treated for non-life threatening injuries.

Homicide detectives are investigating. The arrested man, from Sunshine West, remains in custody and is assisting police with their enquiries.

The exact circumstances surrounding the incident are yet to be determined.

Anyone with information should call Crime Stoppers on 1800 333 000.