Thunder Bay Police are now calling the scene on Pearl Street a homicide.
Officers were called to a home on Sunday May 15 around 10:15pm about a shooting.
When police arrived to the address, a 41 year old man was found inside with serious injuries and later died at Thunder Bay Regional Health Sciences Centre.
A 45 year old Thunder Bay man has been arrested and is facing First Degree Murder charges, however police are still on the hunt for two other suspects.
Suspect 1 believed to be a white male, slim build, long dark unkempt hair, dark pants, light-coloured hoodie, black hat on backwards.
Suspect 2 believed to be male, slim build, light-coloured jacket, grey pants, white toque, light-coloured face mask.
The suspects are considered to be armed and dangerous. If encountered do not approach. Call 9-1-1 immediately.