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.

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.

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.