HOUSTON — Police in Houston say a 5-year-old boy pulled his 2-year-old brother out of a burning tractor trailer following a crash that killed their father.

KPRC-TV reports the truck was a moving van and the family was relocating to Galveston, Texas, when the crash occurred.

Police say the boys were passengers in the truck being driven by their father on Interstate 45 early Friday morning when the vehicle ran into a guardrail and a metal pillar. The truck rolled over and burst into flames. Investigators say the father died at the scene after he apparently was thrown out of the vehicle.

Both boys have been hospitalized. The 2-year-old suffered severe burns. His older brother had minor injuries.

Police say they haven’t been able to contact the boys’ mother.