Sioux Lookout OPP and Lac Seul Police have released the name of the man found dead in a Whitefish Bay home on Sunday.
54-year-old George Carpenter of Lac Seul has been identified as the victim.
OPP were called to assist Lac Seul Police in response to a report that someone was firing shots within the First Nation.
39-year-old Brian Gray was fatally shot during an "interaction" with officers in the incident.
Police continue to investigate the death of Carpenter.
The SIU is looking into the death of Gray.