Crowds of mourners gathered on Sunday across Hong Kong including thousands near the apartment blocks that were engulfed in flames earlier this week, killing at least 146 people in the city's deadliest fire in decades.

Police as well as Hong Kong's anti-corruption watchdog have launched investigations into the blaze at Wang Fuk Court, but a petition calling for greater accountability and demanding an independent probe was swiftly shut down as an organiser was reportedly arrested for sedition.

The first Sunday since the deadly inferno saw thousands flock to a small park next to the charred residential estate, which has become a focal point for grief over what was the world's deadliest residential building fire since 1980.

The queue of people, many dressed in dark colours and holding flowe

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