A teenage girl has publicly accused the police of sexually assaulting her after she was arrested in September during an anti-government rally.
The 17-year-old said she wanted to tell her story in public to stand in solidarity with any others who may have gone through similar experience.
The police are yet to comment on the allegations.
The girl, who gave her name only as K, told a press conference that she was arrested at New Town Plaza in Sha Tin last September for allegedly assaulting the police and has since been charged.
She said immediately after her arrest, a female police officer sexually assaulted her several times.
The teenager told reporters that after arriving at a police station, she was denied permission to use the toilet for over an hour, was made to wait many hours to meet a lawyer, and underwent a complete strip search.
The teen alleged said a female officer who conducted the search insulted her repeatedly, leaving her feeling extremely humiliated.
She said she's suffered from post-traumatic stress disorder ever since, and even tried to take her own life.
K also said she did not file a complaint about the assault as she doesn't "trust the system".
A spokeswoman for the Hong Kong Social Workers' General Union, Jackie Chen, described K's case as the tip of the iceberg, saying many other young people also being subjected to what she called "police brutality".
Chen also called on the police to respect the dignity and legal rights of arrestees, saying they should never be subject to unreasonable and humiliating treatment.