Hong Kong police say unsafe scaffolding and foam may have spread fire that killed at least 94

Three construction employees arrested as firefighters battle to reach trapped people, with many still missingHow the fire unfolded – visual guideHong Kong police have alleged unsafe scaffolding and foam materials used during maintenance work may have been behind the rapid spread of a devastating fire at a group of residential tower blocks that has killed at least 94 people and left scores missing.Firefighters were still battling to reach people who could be trapped on the upper floors of t