In pictures: Building collapse

1 of 5 The 12-storey apartment block in a Cairo suburb comes crashing down after a fire on its lower floors.

2 of 5 Most residents were evacuated safely but some rescuers are believed to be trapped under the rubble.

3 of 5 Their colleagues work into the night to try and free them.

4 of 5 It is thought the fire may have started in the shopping area at the bottom of the building.

5 of 5 Some nearby buildings have been damaged by the collapse - their residents also evacuated.