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Venezuelans are taking the search into their own hands, citing scarcity of rescuers, and calling for machinery capable of moving collapsed structures

AP, LA GUAIRA, Venezuela

The situation has grown more desperate by the hour in Venezuela as people dig through the rubble of collapsed homes and apartment buildings three days after the devastating one-two punch of 7.2 and 7.5-magnitude earthquakes, knowing time is running out to find survivors.Authorities announced Friday night that they would block access to La Guaira, the epicenter of the destruction, as chaos and traffic began to hamper search efforts. Anyone who wants to enter would now have to seek official permits, officials said, but provided few details of who would be allowed in.

Volunteers lift a metal gate as they search through debris on the rubble of collapsed buildings in La Guaira, Venezuela, on Friday.