Pro-democracy activists in Hong Kong are calling for a number of rallies across the territory, following the death of a 22-year-old student. The protestors want a thorough investigation into the first fatality linked to the months-long demonstrations.
Chow Tsz-lok was found unconscious on Monday in a multi-level parking facility in the New Territories district.
Police were using tear gas against demonstrators at the time, in the same area. Investigators say the victim may have fallen from a higher level.
He was pronounced dead on Friday morning.
Activists say the police crackdown could have hampered efforts to save the student's life.
Pro-democracy activist Joshua Wong said, "We mourn together and we urge Hong Kong people to wear black T-shirt together today and tomorrow to show our solidarity and unity. And now is the time for the government to set up independent investigation of the clash."
The student's university held a graduation ceremony on Friday in which the school's president gave a tearful speech.
People have begun rallying to mourn his death. Protestors are renewing a call for an official inquiry into alleged police violence. It's been one of their main requests for months.
The Hong Kong government offered its condolences to the student's family. It added that police are conducting a full investigation into the incident.