The Houston Police Department said officers are searching for 20-year-old Ricardo Alejandro Hernandez, who is not charged, and believe he might have information to provide to detectives.
The 13-year-old, Quinton Higgins, and his 18-year-old brother were gunned down in the parking lot of their home at the Cortland Med Center apartment complex.
HPD said the two brothers were walking across the parking lot at the complex in the 9100 block of Lakes at 610 Drive around 8:40 p.m.
Their mother spoke with ABC13 on how difficult the last few months have been for the family.
"I was in shock. I had literally just seen him. I had seen him like at 7:55 and 8:40 p.m. My son was pronounced dead," the mom said.
RELATED: 13-year-old killed, 18-year-old brother hurt in shooting outside SW Houston apartments, police say
13-year-old killed, 16-year-old brother hurt in SW Houston shooting
A car allegedly pulled up to the teenagers before someone jumped out and shot at them. Horelica said the 13-year-old died at the scene, and the 18-year-old survived after being taken to the hospital.
HPD said it is unclear whether it was a random incident or if the victims were targeted.
According to investigators, the teen boys lived at the apartment complex. Their parents were at the scene but did not witness the incident.
Houston police said the suspects fled in what appeared to be a gray vehicle, possibly a Lexus. One of them was allegedly wearing a blue hoodie.
"I just want him to turn himself in. You know, he took something so precious from me. My son was 13 years old. He had his whole life to live," the mother said.
Anyone with information is urged to contact the HPD Homicide Division at 713-308-3600 or speak anonymously with Crime Stoppers at 713-222-TIPS.
For updates, follow Mo Haider on Facebook, X and Instagram.