KUALA LUMPUR, Malaysia (AP) — Australia's acting prime minister says nothing of significance has been spotted so far by search planes flying deep into the southern Indian Ocean looking for possible debris from the missing Malaysia Airlines jet.

Warren Truss, the acting prime minister while Tony Abbott is in Papua New Guinea, says "nothing of particular significance" had been identified in today's search.

Five planes were sent to look for objects that may be from the missing Malaysian jet, and an Australian official says will be extended for another day.

The search is part of an international effort to solve the nearly 2-week-old mystery of what happened to the jet, which disappeared with 239 people aboard.

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