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PERTH, Australia — After a navy ship heard more signals from deep in the Indian Ocean, the head of the search for the missing Malaysian jetliner said Wednesday he believes the hunt is closing in on the ‘‘final resting place’’ of Flight 370.
The Australian vessel Ocean Shield picked up two signals Tuesday, and an analysis of two other sounds detected Saturday showed they were consistent with a plane’s flight recorders, or ‘‘black boxes,’’ said Angus Houston, the Australian official coordinating the search for the Malaysian Airlines jet.
‘‘I’m now optimistic that we will find the aircraft, or what is left of the aircraft, in the not-too-distant future,’’ Houston said. ‘‘But we haven’t found it yet, because this is a very challenging business.’’