By 1960, Agadir numbered over 40,000 residents when at 15 minutes to midnight on 29 February 1960, it was again almost totally destroyed by an earthquake of magnitude 5.7 on the Richter scale that lasted 15 seconds, burying the city and killing more than a third of the population. The death toll was estimated at 15,000. The earthquake destroyed the ancient [[Kasbah|Casbah]].