At least 29 people have died after a powerful chain-reaction explosion ripped through a fireworks market outside of Mexico City.
Footage posted on social media showed a dramatic blast of fireworks rocketing into the air at the San Pablito Market in Tultepec, leveling the open-air establisment.
Dozens of paramedics and police officers were at the scene of the market to attend to the more than 70 others injured in the event.
The cause of the explosion is not currently known. According to reports in local media, the market had contained up to 300 tonnes of fireworks - most of which are thought to have exploded.
The president of Mexico, Enrique Pena Nieto, tweeted condolences to the families of the victims and wished for the injured people to have a speedy recovery.
Meanwhile, the Mexican authorities have said an investigation into the explosion is underway.
Just a week ago, the director-general of the Mexican Institute of Pyrotechnics had described the San Pablito facility as the most secure fireworks market in Latin America.
Juan Ignacio Rodarte Cordero had also said that the market was based on areas "perfectly designed and with sufficient spaces to ensure there is no chain reaction in case of a spark."
Watch shocking footage of the explosion below: