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.

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. With the fire substantially smaller since it began on Monday,

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