At least 66 people were killed and dozens injured in central Mexico when a pipeline exploded.
It was ruptured by suspected fuel thieves, trying to fill up containers.
Footage shows flames leaping into the night sky in Hidalgo State - north of Mexico City, as people screamed and cried for help.
The region's governor warned the number of victims could still rise.
Mexican president Andres Manuel Lopez Obrador urged people to stop stealing fuel on Saturday.
He's launched a major crackdown on rampant fuel theft, saying it cost the country more than $3 billion last year.
It's been a popular decision in Mexico, although his decision to turn off pipelines to thwart the thieves previously disrupted fuel supply and raised concern that the shortages could damage the economy.
The explosion was one of the worst in recent history in a country that has suffered hundreds of illegal ruptures to its network of oil and gas pipelines.
But, some users of social media responded to the explosion with anger, saying the fuel thieves only had themselves to blame.