Over 90 people have been injured, and 61 arrested, following clashes in Hong Kong's Mong Kok district, police say.
Violence erupted overnight as police cleared illegal food stalls set up on a busy junction for Lunar New Year celebrations.
Angry protesters threw bricks and bottles at police, while police used batons and pepper spray and fired two warning shots into the air.
Police said dozens of officers and four journalists were among those hurt.
Nine women and 52 men have been arrested, all aged between 15 and 70. They are suspected of offences including unlawful assembly, assaulting police and possession of offensive weapons.
