A woman who was convicted of assaulting a police officer with her breasts was sentenced to three months and 15 days’ imprisonment on Thursday morning.

Thirty-year-old Ng Lai-ying was found guilty of assaulting Chief Inspector Chan Ka-po by Tuen Mun Magistrates’ Court earlier this month.

She returned to court on Thursday with three of her co-accused who were also sentenced.

Twenty-year-old Kwong Chung-hung was handed five months and one week in a rehabilitation centre, 22-year-old Poon Tsz-hang was sentenced to five months and three weeks in prison, and a 14-year-old defendant will also be sent to a rehabilitation centre for an indeterminate period of time.

Ng Lai-ying was arrested during an anti-parallel trading protest in Yuen long. Photo: Apple Daily.

All four defendants pleaded not guilty to the charges against them. Lawyers representing the four told the court they would appeal the sentences and the defendants were granted bail.

The magistrate overseeing the case, Michael Chan Pik-kiu, set bail conditions to HK$5,000 each and said that all four defendants must not leave Hong Kong.

According to Stand News between 40 to 50 people turned up at the courthouse to watch the sentencing, including members of Hong Kong Indigenous, a localist group spawned from last year’s pro-democracy Occupy movement.

As they left the courthouse, the three defendants did not comment on the sentence but thanked everyone for their support.

Nicknamed the “Yuen Long Four”, the group were arrested after taking part in an anti-parallel trading protest in Yuen Long at the beginning of March.

Ng was found guilty of thrusting her chest into Chief Inspector Chan’s arm as he was attempting to control the increasingly rowdy protest.

【爆缸之謎】唔駛估啦，黑衣女示威者搞到流鼻血嘅原因，睇片就知道，多得慈母關照。#光復元朗 #警察 #衝突 #反水貨客 #元朗 #流鼻血 #慈母 #暴力 #DBC #DBC數碼電台 Posted by MM on 2015年3月1日

Ng told the court that she shouted “indecent assault” after Chan reached out for the strap of her bag, leading his hand to touch the upper part of her left breast.

Kwong and Poon were found guilty of obstructing police officers and a 14-year-old pupil was found guilty of hitting Chan in the chest with his shoulder.

Local media reported that magistrate Chan dismissed Ng’s allegations, saying they had caused great harm to the officer’s reputation.

Chan also revealed that after the Yuen Long Four were convicted he was threatened and feared for his safety, However, he did not make clear who had threatened him and why.

The ruling made international headlines and also saw 200 people assemble outside the High Court on Sunday, July 26 to protest against the convictions.