A view of Haiti's Presidential Palace, damaged after an earthquake struck, in Port-au-Prince in this January 12, 2010 video grab. A major earthquake hit impoverished Haiti on Tuesday, toppling buildings in the capital Port-au-Prince, burying residents in rubble and causing many deaths and injuries, witnesses in the city said. [Agencies] 

Buildings are seen damaged in the neighbourhood of Petionville, Port-Au-Prince shortly after an earthquake hit Haiti, January 12, 2010. The 7.0 magnitude quake rocked Haiti, killing possibly thousands of people as it toppled the presidential palace and hillside shanties alike and leaving the poor Caribbean nation appealing for international help. [Agencies]