>> Rescuers working against the odds into Thursday evening trying to free survivors from collapsed concrete buildings in Central Mexico following the country's deadliest earthquake in decades. 60 survivors have been pulled from disaster sites in Mexico City since Tuesday's 7.1 magnitude quake. As of late Thursday, 273 people were dead, nearly 2,000 were injured.
The chance of survival falling with each passing hour but officials vowing to press on using dogs, motion detectors and heat seeking equipment to detect victims who may still be alive. Mexico's President saying he believe there could still be people alive in ten collapsed buildings in Mexico City. The Mexican Navy changing its version of events related to the search for a 12 year old girl in the rubble of a school south of the capital, saying all the students are accounted for.
19 children and 6 adults at the school were killed, the rest either in the hospital or safe at home. The extensive damage to many buildings, some of them relatively new raising questions over construction standards which were supposed to have improved after the devastating 1985 earthquake that killed thousands.