Cigarette butt likely cause of Hong Kong's deadliest apartment fire: investigation

A final investigation report suggests a discarded cigarette butt likely ignited the massive fire that devastated Hong Kong's Yuen Long Court apartment complex last year, claiming 168 lives. The blaze, which erupted in November 2025, spread rapidly through seven of the complex's eight buildings, marking the deadliest fire in the city in decades.

The independent commission investigating the incident concluded that the fire most likely originated on the external terrace of units 104 and 105 in Wang Cheong House, one of the apartment blocks. While the exact ignition time remains unconfirmed, investigators estimate it occurred between 2:30 p.m. and 2:43 p.m. on the day of the fire, based on witness accounts and CCTV footage. Styrofoam boards, used to cover windows during ongoing renovation work, were stacked two meters high at the scene, contributing to the fire's rapid spread.

In the aftermath of the tragedy, Hong Kong authorities have taken legal action, charging seven individuals associated with the renovation project. These charges, including manslaughter, were filed in June, with court proceedings set to resume in September. The building was insured for approximately 2 billion Hong Kong dollars (about $360 million USD) against property damage, with additional public liability and personal accident insurance also in place. The investigation's conclusion that the incident was likely an accident is expected to be a crucial factor in the insurance payout process.