"I can't find my father, and my mother is very badly burned," said Juana Antolina Hernández, who has run a stand for 22 years in the San Pablito market
3 of the 4 children suffered third-degree burns on over 70% of their bodies; all four will be treated in Galveston, Texas.
Videos of the blasts at the busy San Pablito market on Tuesday showed a spectacular flurry of pyrotechnics exploding high into the sky, like rockets in a war zone, as a massive plume of charcoal-gray smoke billowed out from the site
The explosion caused minor damages to the building's entrance and no injuries were reported.
"Everything was catching fire. Everything was exploding," said one survivor. "The stones were flying, pieces of brick, everything was flying."
Personal de la policía municipal informó de la explosión de un fábrica de cohetes localizada en la comunidad de Tentla, municipio de Lolotla, que dejó como saldo tres personas lesionadas
It is the third such blast to ravage the market on the northern outskirts of the capital since 2005.
The chief prosecutor of Mexico State says 26 people have been killed in an explosion that tore through a fireworks market near Mexico City.
La institución difundió imágenes tras el incendio en el mercado de pirotecnia
Similar explosions and fires engulfed the same market in 2005 and again in 2006.