The protesters dispersed and they were surrounded by police on Gloucester Road. The police started to make arrests at 3am on Sunday and did not remove all the protesters until 2pm.

'We were not allowed to go to the washroom after 10.30pm on Saturday and I actually told the police officers to arrest me, so I could go to the detention centre to stay warm and use the washroom,' she said. 'But they ignored me and so I cried and shouted: 'I would urinate here.''

She said she could finally stay indoors after 3am when she was brought to the Kwun Tong Police Station, but officers there insisted they could only sit on a cold floor. They were also hand-cuffed before they could go to the washroom, Ms Park said.

'One comrade had to pee in front of a female officer and all of us had to be searched by female officers in front of the male officers,' she said.

'A few of us were not given sanitary pads even though some were having their period.

'We felt hurt because of all the humiliation.'

Ms Park flew back to Korea late on Monday afternoon.

Police's spokesman chief superintendent Alfred Ma Wai-luk told local radio on Monday that the accusation of the police's mistreatment of protesters was groundless. He said police had not received any formal complaints from any of those arrested.

Meanwhile, 14 Koreans and four Indonesians who were arrested last Saturday would appear in the Kwun Tong Magistrates' Court on Monday evening.