TULTEPEC, MEXICO — At least 29 are dead and dozens more were injured after an explosion tore through a well-known fireworks market in Mexico — the third such blast to hit it since 2005. <br /> <br />On Wednesday, the open-air San Pablito artisanal pyrotechnics market in Tultepec on the outskirts of Mexico City was bustling with shoppers stocking up on fireworks for the holidays, reports the Chicago Tribune. <br /> <br />An explosion around 3 p.m. set off a chain reaction that ignited nearby pyrotechnics and caused flames to quickly ravage the area. <br /> <br />Twenty-six were killed at the market, while three others died at the hospitals. Seventy-two others are being treated for their injuries, which include severe burns. <br /> <br />Authorities have yet to determine what caused the blast, but have opened an investigation and have promised to punish those responsible.
