The death toll in an explosion at the headquarters of Petroleos Mexicanos (Pemex) in central Mexico City reached 32 on Friday, said Emilio Lozoya, managing director of the state oil company, dpa reported. Rescue teams found seven bodies overnight and continued to work in the rubble of the 12-floor building where the blast happened Thursday. Lozoya told a press conference 1,700 people worked in the affected tower, one of five buildings in the Pemex corporate complex. A further 121 people were injured in the explosion, Lozoya said, and rescue teams were still searching for people missing in the rubble. The cause of the blast in the basement at 3.45 pm (2145 GMT) was not immediately known. -- SPA