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

With the fire substantially smaller since it began on Monday, police were able to access the area around the pipeline in Deer Park.

Human remains were 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, officials said Thursday. As authorities worked to identify who had driven the vehicle,