The OPP Greenstone Detachment arrested a 21-year-old man in connection with a sudden death on the territory of the Aroland First Nation.
Brady Gagnon is charged with premeditated murder.
According to a statement from the OPP, officers received a complaint about an altercation involving a firearm around 1:00 am on Friday.
The police went to the Aroland First Nation community pow-wow grounds, where they found a severely injured man.
The paramedics then went to the scene where they observed the death of the victim. An autopsy is scheduled for April 22 in Toronto.
The accused is detained in Thunder Bay District Jail until his next court appearance.