Argentine navy says explosion heard in search area of missing submarine

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A woman places a banner in support of the crew members of Argentine missing submarine ARA San Juan, in Mar del Plata, Argentina, on Nov. 23, 2017. Argentina's Navy confirmed on Thursday that there was a "singular, abnormal, short, violent and non-nuclear event" consistent with an explosion in the area where the submarine was lost. (Xinhua/Martin Zabala)