Rescuers and survivors work amid the smouldering ruins left by a blast in a fireworks market that killed at least 29 and injured dozens, in Mexico City. Pic/AFP

Mexico City: At least 29 people were killed in a fireworks market explosion near Mexico City, an official said. Mexico State Prosecutor Alejandro Gomez raised the toll of the Tuesday's blast from the previous nine deaths, Xinhua news agency reported citing a local television.