A former felon turned criminal justice reform activist is the main suspect in the murder of another felon whose remains were found in his New York City apartment.

Sheldon Johnson, 48, was originally sentenced to 50 years in 1998 for armed robberies where he claimed he was not involved in hurting any of his victims. Johnson was released in May after serving over 25 years of his sentence. Police have since charged him with second-degree murder and concealment of a human corpse.

Investigators found the torso and feet of Collin Small, 44, Tuesday in his own Bronx apartment. Later, police alleged they found Small’s head, legs, and one arm stuffed into the freezer of Johnson’s Harlem apartment. Authorities believe Johnson shot Small in the head before dismembering him.

Both Johnson and Small were imprisoned convicts per New York Department of Corrections records. The two presumably knew each other, according to police.

Johnson appeared on the Joe Rogan Experience podcast earlier this month, discussing his experience in prison and his claim of reform. On his Instagram, Johnson posted a photo of himself with Manhattan District Attorney Alving Bragg to his story hours before the arrest. Another of Johnson’s posts features him gesturing to a poster that reads: “Jail increases the risk of recidivism … at the expense of actual public health and safety.”

“One thing I learned really, really quickly when I got to prison was that prison does two things to you: it brings out the best, or it brings out the worst,” Johnson told Rogan during the podcast.

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The former felon went on to volunteer with the Queens Defenders, the borough’s office of public defenders. During his interview with Rogan, Johnson donned one of their shirts. Queens Defenders did not respond to the Washington Examiner’s request for comment.

Johnson is next due in court on Mar. 11.