A fire spread across multiple high-rise apartment buildings in a Hong Kong housing complex on Wednesday, killing 13 people and leaving others trapped inside. Flames engulf scaffolding across multiple buildings at Wang Fuk Court housing estate in Tai Po, Hong Kong. Photograph: Tyrone Siu/ReutersSmoke rises at Wang Fuk Court, a residential estate in the Tai Po district of Hong Kong. Wang Fuk Court is one of many high-rise housing complexes in Hong Kong, which is one of the most densely populated areas in the world. Fire engulfs several apartment blocks at the Wang Fuk Court residential estate in Hong Kong.