Venezuela earthquake: father and son found alive in rubble after four days as death toll nears 1,500

President says we always hold onto hope' as discovery of earthquake survivors spurs fresh search efforts despite dwindling chances of survival

• Mortuary in Caracas overwhelmed' as Venezuela struggles to respond after earthquakes

A man and his teenage son were found alive under the rubble in Venezuela on Sunday, in a town about 40km north of the capital Caracas, AFP journalists reported, as the death toll from last week's twin earthquakes passed 1,450.

The discovery of survivors in Caraballeda was made by French and American rescue teams nearly four days after back-to-back quakes of magnitude 7.2 and 7.5 struck, completely destroying nearly 200 buildings in the area.