(AP) — Tuesday marks the anniversary of 40 years of solitary confinement for two former Black Panthers convicted of murdering a Louisiana prison guard.

Amnesty International delivered a petition to Gov. Bobby Jindal, calling on Jindal to remove the men from isolation in the Louisiana State Penitentiary at Angola. The petitions contained 65,000 signatures from people around the world who call the confinement inhumane.

Sixty-five-year-old Albert Woodfox and 70-year-old Herman Wallace were serving sentences for armed robbery in 1972 when they were charged and convicted with fatally stabbing a guard at the Angola prison and moved to solitary confinement.

Jindal didn’t seem poised to intervene to remove the men from isolation. The governor’s spokesman deferred all questions to the Department of Corrections.