A Houston woman was sentenced to 23 years in prison Tuesday for murder in the fatal shooting of a classmate at Lamar High School in 2018, Harris County District Attorney Kim Ogg announced.

“This was not just an ambush, but an execution that was planned and carried out by several people, and we want to hold all of them responsible to get justice for the victim and his family,” Ogg said.

Keona Samireal Mouton, 22, was convicted by a jury of murder Tuesday for her role in the shooting death of 18-year-old Delindsey Mack on Nov. 13, 2018.

Mouton, who was 16 at the time, lured Mack to an after-school meeting where he was gunned down by two men. The first, Kendrick Johnson, was a gang member tied to at least six other murders. He was sentenced in 2021 to life in prison for his role in the murder.

The second shooter has yet to be apprehended. The Houston Police Department and prosecutors continue to ask for the public’s help in identifying and arresting that man.

A third man who was involved in the shooting, Dave’on Thomas, was the getaway driver and was sentenced last year to 50 years in prison.

The murder near the high school was likely the result of an ongoing war between two Houston gangs. Social media posts had described Mack as a gang member, which led to him being targeted, but he was actually known to be an outstanding football player. He had recently transferred from Yates High School to escape gang violence.

Assistant District Attorney Sarah Seely, who heads the DA’s Homicide Division, and ADA Maroun Koutani prosecuted Mouton in a seven-day trial.

“Delindsey Mack’s parents put him in the one place that children should be safe, but Keona Mouton pulled all the strings to make his murder happen,” Seely said. “We are still looking for information and investigating who the second unknown shooter is in the case because everyone who is responsible for the murder of Delindsey Mack should be held accountable.”

Anyone with information on this case is urged to call Houston Crime Stoppers at 713-222-TIPS (8477).

Mouton was certified to stand trial as an adult. She must serve at least half of the sentence before she will be eligible for parole.

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