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HARRIS COUNTY, Texas - A man who was arrested in 2021 for his parents' deaths has died while in Harris County custody, according to the sheriff's office.
Harris County murder suspect dies in custody
What we know:
Authorities say 40-year-old Nickie Costello was pronounced deceased Thursday afternoon at the St Joseph Medical Center.
Costello was in custody on a capital murder charge. He was accused of killing his parents, David Morgan and Juanita Costello.
Records show that he was scheduled to appear in court in early December.
Nickie Costello (2019 booking photo via Jail Records)
According to the Harris County Sheriff's Office, Costella suffered a medical emergency on Thursday. Paramedics took him to St Joseph, and he was pronounced deceased shortly after 3:30 p.m.
Costello's death has been reported to the Texas Commission on Jail Standards, and it's being investigated by the Texas Rangers.
The Sheriff's Office Internal Affairs Division will investigate "whether all applicable policies and procedures were followed."
What we don't know:
Costello's cause of death remains under investigation.
2021 murders
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PREVIOUS: Man charged with capital murder for stabbing parents, found in crashed car miles away from scene
Investigators say Nickie Costello, 35, after stabbing his parents to death he was arrested a short distance later after crashing his car. He was also suffering a stab wound when officers found him.
The backstory:
Costello's parents were found stabbed to death in October 2021. It happened in Houston's Northside at the home where the couple lived and where the mother, Juanita, conducted her psychic business.
Nickie Costello was reportedly found in a crashed car a short distance from the home. He was also suffering from a stab wound.
PREVIOUS: Man charged with capital murder for stabbing parents, found in crashed car miles away from scene
The Source: Harris County Sheriff's Office and previous FOX 26 reporting.