Firework explosion kills 31 in Mexico

An explosion at a fireworks market outside Mexico City has killed at least 31 people. More than 70 others were injured as the blast hit the San Pablito fireworks market in Tultepec, about 32km outside the city. Video from the scene showed a large number of fireworks rocketing into the air as they caught fire. Dozens of paramedics and police attended the scene. The cause of the explosions is not yet known. Locals have been told to avoid the area and keep roads clear. The San Pablito market was heavily damaged by similar fires in September 2005, when a chain of explosions just before the country's independence day celebrations injured dozens of people.