A 24-storey building used by squatters in the center of Sao Paulo, Brazil's biggest city, collapsed early Tuesday after a blaze that tore through the structure, leaving at least three missing.

AP reports that the "roofless" movement mirrors the "landless" movement in Brazil: Building owners are in ... of evicted homeless people in Sao Paulo. Follow @msnbc_pictures ...

The area selected for the sinking was chosen on the basis of studies carried out by the Navy's Hydrographic Center and the Admiral Paulo Moreira Institute of Sea Studies, paying special attention ...