Sept. 11 (UPI) -- At least three people are dead and 90 are injured following the explosion of a gas tanker in Mexico City, officials said. Mexico City Mayor Clara Brugada Molina announced the casualty toll online, listing all 90 people who were injured and the hospitals where they were being treated. Ages of the victims ranged from 6 months to 60 years old. At least 10 people have been discharged from the hospital, she said. Earlier, before any fatalities had been reported and when only 57