WASHINGTON After nearly 50 years in prison, Native American rights activist Leonard Peltier is about to get what may be his last chance at freedom.

Peltier, 79, is up for a parole hearing on Monday.

His last parole hearing was in 2009. Given his poor health and the many years hed likely have to wait for his next hearing, it is unlikely he would survive to make another one.

The U.S. government put Peltier in prison in 1977 after he was convicted for killing two FBI agents in a 1975 shoot-out on Pine Ridge Reservation in South Dakota. But his trial was riddled with misconduct , and his prolonged imprisonment has drawn sharp condemnation from prominent human rights leaders, including Pope Francis, Mother Teresa, the Dalai Lama and Nelson Mandela. Dozens of U.S. senators and members of Congress have urged his release. So have dozens of Indigenous legislators .

Amnesty International, an organization typically focused on human rights violations abroad, has an entire campaign centered on Peltiers case.

Leonard Peltier has been imprisoned for nearly 50 years, and now suffers from severe health issues, Sen. Brian Schatz (D-Hawaii), chair of the Senate Committee on Indian Affairs, told HuffPost in a statement. Its time for him to go home and live out his remaining days with his family and his community.