Officials say human remains have been found inside an SUV that authorities say hit an aboveground valve on a pipeline in suburban Houston, causing a fire that has burned for four days.

A fire that erupted from a Texas natural gas pipeline that was struck by a vehicle died down and was extinguished Thursday, the city of Deer Park said.

The Deer Park Police Department said the incident involving a vehicle that crashed into a natural gas pipeline in Houston, Texas and ignited a massive fireball is now a criminal investigation.