Thousands of people work at the Pemex headquarters , which includes a 54-story building that is nearly 700 feet tall . NEW : The country 's attorney general similarly refuses to rule out possibilities . Mexico : President Enrique Pena personally visits victims in the hospital . The death toll rises to 33 . Employee : ` ` I saw the explosion of gunfire , people bleeding ; ... I was terrified ''
NEW : The country 's attorney general similarly refuses to rule out possibilities . Mexico : President Enrique Pena personally visits victims in the hospital . The death toll rises to 33 . Employee : ` ` I saw the explosion of gunfire , people bleeding ; ... I was terrified ''