HPD said they are searching for 17-year-old Joshua Garcia, who is charged with murder.
The video above is from a previous report.
Police said the shooting happened on July 20 at about 12:45 p.m. Officers responded to a call in the 8800 block of Hammerly Boulevard. When they arrived, Choukair was found dead with gunshot wounds in the driver's seat of a parked vehicle.
Authorities said an investigation determined Choukair was last seen in the parking lot talking to the 16-year-old girl, who was followed by an unknown suspect, later identified as Garcia.
Police said Garcia and the 16-year-old girl were seen running further into the apartment complex.
The 16-year-old girl was arrested on Tuesday, but police said they are still looking for Garcia.
The girl is being held in the Harris County Juvenile Probation with a capital murder charge. Because of her age, her name is not being revealed.
Anyone with information on Garcia's whereabouts is urged to contact the HPD Homicide Division at 713-308-3600 or speak anonymously to Crime Stoppers at 713-222-TIPS.