pause to sing the national engt em. president pena nieto said there could be more survivors. the hope fades. the mexican navy apologizes over confusion that a 12-year-old girl was still alive and trapped in the rubble of a collapsed school. let's bring in miguel marquez. they fear it might collapse again. miguel? >> we are here where a building maybe has dozens of people who are possibly alive. you have signatures here as the mexican navy is apologizing as you say. they released a statement a short time ago saying this is from the deputy of the mexican navy. i want to make clear the information was released by the navy based on technical reports and the accounts of the civilian and navy rescuers.