Four Venezuelan police officers are detained after videos show them stealing cash and valuables recovered from earthquake rubble in La Guaira, where two strong quakes near Caracas have killed nearly 2,000 people and left thousands injured and homeless.Rescue teams, including international units and Venezuelan emergency workers, continue searching for survivors while hospitals in Caracas and other cities are overwhelmed and the World Food Programme plans aid for up to 500K displaced people.Aid agencies and opposition groups say shortages of food, water and shelter are stoking fights at distribution points and demand faster deliveries and tighter security to prevent further disorder; the officers were expelled from the Scientific, Penal and Criminal Investigations Corps and will face prosecution.