Over 36 hours after the blast — which shot towering flames like a blowtorch above the suburbs of Deer Park and La Porte — authorities have provided few details about the circumstances leading up to the explosion.

A Deer Park spokesperson said four people were injured, but provided no details about the seriousness of the injuries. One firefighter sustained minor injuries.

A pipeline fire that erupted in a suburban Houston neighborhood burned for a second day Tuesday with still no definitive word on when the blaze would