Court documents show that Joseph Tui Jr., while being cared for a wrist and leg injury, admitted to a mobile intensive care technician that he admitted punching and kicking his cellmate in the head.
Tui, 32, was arrested Saturday at the Oahu Community Correctional Center in Kalihi for first-degree murder in connection with the death of 76-year-old Cyrl Chung.
Chung was serving time after he was found guilty of four felony robbery charges dating back to August 1955.
At around 2 p.m., an OCCC corrections officer made a check of the cells for a head count and saw Tui and Chung in the same cell with no injuries and no other inmates.
About 10 minutes later, corrections officers were alerted by inmates yelling and screaming on the second floor that a man was down.
A corrections officer found Chung lying naked on the ground with blood coming out of the back of his head and was unresponsive, according to court documents.
Corrections officials found Tui sitting on the top bunk with what appeared to be blood on his left foot. Blood was also found on Tui's face, hands, feet and the left leg area of his inmate uniform.
Chung was transported to the Queen's Medical Center in critical condition with head injuries. At around 4:12 p.m., he was pronounced dead.
Tui complained about pain to his left leg saying he just assaulted another person. While with a mobile intensive care technician, Tui admitted to her that he was punching and kicking the man in the head.