HONG KONG — Hong Kong police and demonstrators faced off for the twelfth weekend in a row, with police firing a gun and deploying water cannon trucks, the BBC reports.

The protests began in June as the Hong Kong government proposed an extradition bill that would allow suspects to be extradited for trial to mainland China.

Those against the bill believe that Beijing may use it as a way to extradite political activists, dissidents and other critics in the city. The Hong Kong government has since suspended the bill, but protesters are calling for the government to withdraw it altogether.

The protests have since morphed into a larger movement calling for greater autonomy in the territory.

On Sunday, protests started in Hong Kong's Tsuen Wan district and spread to Tsim Sha Tsui. Some of the demonstrators threw bricks and petrol bombs at the police, BBC News reports.

Protesters were also seen chasing the police with metal pipes, while four police officers were filmed drawing their guns and pointing them towards a group of people, CNN reports.

One Hong Kong police officer fired a gunshot into the air on Sunday night as a warning to the protesters.

The police deployed two water cannon trucks equipped with surveillance cameras and multiple nozzles, against the demonstrators for the first time, according to the Hong Kong Free Press.

Activists are calling for the resignation of Hong Kong's leader Carrie Lam and are also pushing for an investigation into alleged police brutality.