Journalist Shaun King and civil rights attorney Lee Merritt have come together to offer a $35,000 reward to find the person who shot and killed Jazmine Barnes on Sunday.
Jazmine was with her mother and siblings inside the family's vehicle when she was shot.
RELATED: Mom says man 'intentionally' killed 7-year-old daughter near Walmart
Her mother, 30-year-old LaPorsha Washington, said she was taking her daughters to the store to get coffee when someone started shooting out of nowhere.
Jazmine died at the scene. Her mother was hospitalized with injuries.
Investigators released a photo of the suspect's truck, described as a 4-door red pickup truck. The make and model is not known.
SEE ALSO: Search for clues after 7-year-old shot while leaving Walmart with her mother
If you have any information, call the Harris County Sheriff's Office or Crime Stoppers at 713-222-TIPS.
You can also make an anonymous tip online at www.Crime-Stoppers.org.
Follow Marla Carter on Facebook and Twitter.