Side scan sonar used to locate Robredo's plane

Posted at Aug 23 2012 12:05 AM | Updated as of Aug 23 2012 08:05 AM

With the help of technical divers and a side scan sonar, search teams were able to locate the plane that carried Interior Secretary Jesse Robredo and two other pilots. ABS-CBN News correspondent Alex Santos takes us through the search. -- Prime Time, ANC, August 22, 2012

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