Chief and council passed a band council resolution to leave the organization during a duly convened meeting this week at Indian Brook First Nation.
"Our band council has decided to take full responsibility of any on-going aboriginal and treaty negotiations that may impact our band," said Chief Rufus Copage in a news release.
"We feel we can better represent our band members’ best interests as we move forward in treaty discussions with the Government of Canada and the Province of Nova Scotia."
The Shubenacadie Band chief and council has informed the Mi'kmaq Rights Initiative of its decision to withdraw from the organization.
The Shubenacadie Band is the second largest Mi'kmaw band in Nova Scotia with more than 2,500 registered band members. Approximately 1,200 band members live on-reserve in Indian Brook First Nation.