A Hong Kong police officer fired a gunshot during protests on Sunday, the first time a live round ha

Images show several other officers also pointed guns at protesters who charged at them with sticks and poles.

In another first, police deployed water cannon against protesters earlier in the day.

The protests began in the city's Tsuen Wan district and then spread to the district of Tsim Sha Tsui.

Hong Kong police said 36 people had been arrested as a result of Sunday's protests, the youngest aged just 12.