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Harris County inmate accused of killing cellmate while awaiting trial for grandmother’s murder

Chad Bannon Maydwell, charged with killing his grandmother in 2022, now faces a new murder charge for allegedly killing inmate Michael Griego in jail. (Copyright 2024 by KPRC Click2Houston - All rights reserved.)

A man already imprisoned on a capital murder charge for the death of his grandmother, now faces additional charges after allegedly killing his cell mate at the Harris County Jail.

Authorities say Chad Maydwell fatally attacked Michael Griego, an inmate jailed for aggravated assault of a family member, on Nov. 12, 2022.

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It’s unclear what led up to the murderous scuffle, but court documents allege Maydwell used his hands and feet as deadly weapons, striking Griego multiple times in the head, face, neck, and torso. He also reportedly threw Griego off a top bunk onto the floor.

BACKGROUND: $1M bond set for man accused of killing 80-year-old grandmother in NW Harris County, docs show

Griego, who was awaiting trial, was pronounced dead following the assault.

Maydwell was already in jail facing capital murder charges for the brutal killing of his grandmother, 80-year-old Judith Ellen Maydwell, in April 2022.

According to court documents, Maydwell killed his grandmother at her northwest Harris County home using a blunt object or his hands after breaking into her residence. Authorities later found Judith Maydwell’s body during a welfare check, requested by her daughter.

Neighbors reported seeing Chad Maydwell’s vehicle at the scene before the murder. Investigators say he also fled after the crime, but was captured by a Harris County K-9 unit with assistance from Texas DPS and later admitted to the killing while he was treated by EMS.

At the time of his grandmother’s murder, Maydwell was out on bond for indecent exposure. He also had a lengthy criminal history dating back to 2009, including charges of criminal trespassing, assault, and resisting arrest.


About the Author
Holly Galvan Posey headshot

Holly joined the KPRC 2 digital team in March 2024, leveraging her eight years of expertise in blogging and digital content to share her passion for Houston. Outside of work, she enjoys exploring the city's vibrant scenes, all while balancing her roles as a wife and mother to two toddlers.

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