PHOENIX -- A March 2016 trial date has been set for a Phoenix man charged with fatally stabbing his 12-year-old half-brother.
Authorities said 27-year-old Andrew Ward killed Austin Tapia on March 12 and explained his motive by saying, "Honestly, I just felt like killing."
Prosecutors are seeking the death penalty.
Ward pleaded not guilty to a murder charge in Tapia's death.
While in a Maricopa County jail, Ward was charged with first-degree murder in the April 2 death of his cellmate.
Investigators said Ward used a golf pencil to stab 33-year-old Douglas Walker in the eyes, beat him and forced a plastic bag and peanut butter sandwich down Walker's throat.
Ward has pleaded not guilty in Walker's death.
No trial date has been set in that case.