Five people involved in the 2018 killing of a Cobb County father of three were sentenced to prison time for their roles in the robbery attempt-turned-murder.

Delayed since early 2020 due to the COVID-19 pandemic, the trial centered on the murder of 25-year-old Daniel Perez, Cobb District Attorney Flynn Broady said Friday in a news release announcing the sentences. Each of the five defendants will go to prison for varying lengths of time.

The teenager who fired the fatal shot, 18-year-old Gustavo Hernandez-Ortiz, was found guilty Aug. 27 of all charges, including four counts of murder, Broady said. Hernandez-Ortiz, who was 15 at the time, was sentenced to life in prison plus 15 years.

Gustavo Hernandez-Ortiz

Credit: Cobb County Sheriff's Office

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Credit: Cobb County Sheriff's Office

Devin Thomas, 25, orchestrated the meeting with Perez and had previously entered a guilty plea, according to the news release. Thomas was also sentenced to life in prison.

Their co-conspirators, who had also previously pleaded guilty, each received lesser sentences.

According to the case presented at trial, Hernandez-Ortiz and his co-defendants planned a robbery of Perez on March 23, 2018. Thomas set up a meeting with Perez to buy some marijuana in a parking lot across the street from North Cobb High School. Thomas walked up to Perez, who was sitting in his car, and spoke to him for a few seconds before Hernandez-Ortiz appeared.

“Hernandez-Ortiz ran up to the car, racked the handgun, and shot Daniel Perez in the back of the head,” Broady said.

Thomas and Hernandez-Ortiz then fled to a getaway car, where three co-conspirators were waiting for them. All three of them — Brittani Hernandez, 21; Charlton Kariuki, 24; and Maria Mungai, 22 — testified that murder was not part of the plan. During the trial, evidence showed that Kariuki had bought the gun and ammunition used to kill Perez.

Kariuki received a 17-year prison sentence, while Hernandez and Mungai received six and two years of jail time, respectively.

Charlton Kariuki (from left), Brittani Hernandez, Maria Mungai and Devin Thomas were convicted. Gustavo Hernandez-Ortiz's mug shot was not available because he was 15 at the time.

Credit: Cobb County Sheriff's Office

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Credit: Cobb County Sheriff's Office

“This is a tragedy all around,” lead prosecutor Senior Assistant District Attorney David Williamson said. “Daniel Perez was a hard-working father of three young children who was killed for absolutely no reason. We have countless friends and family of both the victim and the co-defendants whose lives are forever changed — all because of bad choices made by some really young people.”

At the sentencing hearing, Perez’s father, Tobias Perez, was able to directly address Hernandez-Ortiz.

“I just ask that you reflect and straighten out your life,” he said. “You damaged it at a very young age. I hope that God will forgive you; on my part, I have forgiven you. I just hope that you become a good man for society.”