New surveillance video reveals support brace bending before Davenport building collapse.

New surveillance video obtained by CNN shows a support brace bending and portions of the brick façade crumbling around it in the 10 minutes before a Davenport, Iowa, apartment building collapsed on Sunday. The search for survivors continues, as crews work to stabilize the structure to make it safer for recovery efforts. While no deaths have been confirmed, three residents who lived in the collapse zone are still unaccounted for. The cause of the collapse has not been determined, but the city plans to turn over documentation including videos, photos and logs to an investigative team.