Dramatic video shows Hong Kong riot police firing tear gas and projectiles into a subway station during a violent crackdown on pro-democracy demonstrators.

The officers are seen launching the offensive Sunday night against the protesters inside the Kwai Fong MTR station during the 10th straight weekend of unrest in the former British colony.

Police, some disguised as protesters, also fired at them at close range with less-than-lethal ammunition.

One young woman was shot in the face with what appeared to be a bean bag, severely injuring her eye.

On Monday, authorities said the images had to be verified and that they could not confirm “the reasoning behind this lady’s injury.” Police also could be seen pinning a bleeding demonstrator to the ground.

Deputy Commissioner Tang Ping-keung acknowledged that police used some decoy officers but would not go into details.

“Our decoy officers do not take part in any unlawful activities,” Tang insisted.