Mangione, 26, was charged with the Dec. 4 murder of United Healthcare CEO Brian Thompson. He was first arrested in Altoona, Penn., on gun possession and false identification charges. He fought extradition back to New York City — where Thompson's murder was committed — until Dec. 19, when he left the Huntingdon prison.

Inmates and guards noted lockdowns during Luigi Mangione's movements and his unique attire. His high-profile murder case sparked fascination among prisoners.

During Mangione’s stay at SCI Huntingdon before his extradition to New York, prison guards and administrators altered their typical routines, Vaughn Wright, an incarcerated writer, said in a piece pub