Three days after the collapse of a four-story building that was under construction, rescuers were still combing through some 3,000 tons of concrete rubble even as signs of life faded.

Rescue work was turning into a victim recovery effort after an apartment building collapsed in South Africa, trapping dozens of construction workers.

Rescue efforts were underway after three people were killed and dozens remained trapped after a multi-storey building under construction collapsed in the South African city of George, authorities said.