Devonte Lockett, 18, was arrested Thursday night and charged with aggravated assault in the death of Tristian Hutchins.
Hutchins was shot in the head in a March 1 drive-by shooting as his mother ran inside a Third Ward salon. He later died from his injuries.
The boy's 5-year-old sister was shot in the leg. A third sibling was not injured in the shooting.
According to documents, Lockett was previously charged for evading arrest, possession of a controlled substance, and for carrying a handgun in a motor vehicle.
Houston Mayor Sylvester Turner took to Twitter after hearing the news of Lockett's arrest. He said:
Houston Police Chief Art Acevedo said Hutchins is the 10th child to be shot and killed within the past year in the city.
At this time, Lockett is being held in the city jail.
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We are expecting to hear more about the suspect and his arrest in a joint press conference between the mayor and Chief Acevedo on Friday afternoon.