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 vehicle crashed into a gas pipeline valve near Houston, exploding into a tower of flame that has burned for days. Investigators are now looking into whether it was more than an accident.

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.