The accident happened Saturday night on State Highway 249 and McKinley Road in northwest Harris County.
VIDEO: Rear-end crash kills boy, critically injures baby on SH 249
Juan Esparza was turning his Toyota Sienna minivan into the parking lot of a go-kart facility when the driver of a BMW SUV slammed into the back of their vehicle. With Esparza inside the vehicle were his wife and four children.
Her 10-year-old brother, Brian Esparza, died at a hospital as a result of his injuries. Investigators say neither child was wearing a seat belt at the time.
Officers say the baby was being held at the time of the accident.
The driver who slammed into the back of that minivan was not injured. Alcohol was not a factor in the crash.
We're following this story on Eyewitness News. Watch for updates on air, online and on our mobile news app.
Keep checking back on this page to get real-time updates as this story unfolds. To get alerts for breaking news, download the abc13 news app for iPhone or Android. You can also get breaking news alerts sent to you by email.