Police started dispersing dozens of protesters who had gathered outside Sham Shui Po police station around midnight on Thursday.

Some had thrown objects inside, while others shone laser pointers at windows and chanted slogans.

Around 11.45pm officers inside the station used loudspeakers to tell the crowd that constituted an illegal assembly and called for them to leave immediately.

Police warned the crowd if they did not leave, officers would use force to disperse them.

Shortly after riot police emerged onto the streets and the crowds started to retreat.