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TEMASCALCINGO, Mexico — <\/span>Pyrotechnic material exploded during the festival for a patron saint in a town in Mexico State, collapsing a wall, killing at least 10 people and injuring another 64, Mexican authorities said. <\/p>\n The explosion occurred Saturday night next to the Nuestra Se\u00f1ora de la Luz church in Temascalcingo, a municipality in central Mexico with 66,000 residents. Hundreds of them were preparing to watch a fireworks display that is part of a religious festival when the blast occurred. <\/p>\n The municipality is about 160 kilometers (100 miles) northwest of Mexico City.<\/p>\n The cause of the explosion has not been determined and the Mexico State Attorney General\u2019s Office has opened an investigation. <\/p>\n A local bishop said two priests are among the injured.<\/p>\n A video on social media shows the aftermath of the blast, with dozens of people walking through smoke and debris in search of survivors.<\/p>\n Explosions involving pyrotechnics are common in Mexico, where fireworks are frequently used in street celebrations and religious festivals. Almost four years ago, a powerful fireworks explosion in a village in the municipality of Huejutla, in the central state of Hidalgo, left 17 people injured.<\/p>\n<\/div>\n