Demolition of collapsed Miami building to begin on Sunday

A police boat patrols in front of the collapsed building (Mark Humphrey/AP)

Family members of people missing in the rubble of a collapsed apartment block in Miami have been told that demolition workers will bring down the remainder of the building on Sunday.

Worries have intensified over the past week that the damaged structure could fall down on its own, endangering the fire and rescue crews below and complicating the search for victims.