Authorities have since charged the 14-year-old with murder.
The wreck happened Tuesday on Aldine Mail Route Road near Aldine Westfield.
Surveillance video from a nearby business shows the 14-year-old and two other teens being chased by another driver before the crash.
Authorities say the teens damaged the driver's vehicle by throwing eggs at it. The driver allegedly flashed a semi-automatic handgun at the teens.
WATCH: Driver flashed gun at teens before deadly crash, deputies say
In the video, you see the GMC Acadia, driven by the 14-year-old, run through a red light and smash into a woman's Ford F-150, killing her.
Bystanders are spotted running to the crash to help the victims as smoke rose from both vehicles.
Harris County Sheriff Ed Gonzalez identified the woman killed as 45-year-old Silvia Zavala.
WATCH: Sounds of tires screeching as deputies recreate crash
Deputies say the driver who was allegedly chasing the teens has been identified and located and is cooperating with the investigation.
The 14-year-old has since been booked in the county juvenile detention center.