Aftershock frays nerves as many Venezuelans left to fend for themselves

• Many areas of Venezuela devastated by last week's twin earthquakes have yet to receive significant government help, leaving residents to carry out much of the rescue effort.
• In the port of La Guaira, one of the hardest-hit cities, the BBC saw people using crowbars, mallets and pickaxes to try to dig out loved ones and neighbours.
• Tens of thousands of people are still believed to be missing.