Explosion claims at least 14 lives in Mexico Rescue workers at the skyscraper of state-owned Mexican oil giant Pemex in Mexico City following a blast inside. Mexico City: Update At least 14 people have been killed and 80 injured in a blast that rocked the Mexico City skyscraper that houses the headquarters of oil giant Pemex, Mexico's interior minister says. ""We have 13 dead at the scene and one more at the hospital. There are more than 80 wounded and we continue to look for survivors in the debris,"" Interior Minister Miguel Angel Osorio Chong told reporters. The explosion damaged three floors of the building, sending hundreds into the streets and a large plume of smoke over the skyline. There was no immediate cause given for the explosion which occurred in the basement of an administrative building next to the iconic, 52-storey Pemex tower. In an earlier message on Twitter, the company said it had evacuated the building because of problems with the electricity in its administrative skyscraper.