SINGAPORE - After changing his girlfriend's login password to her e-mail account, a cook posted on her Facebook profile a naked photograph of her, as well as a video of the teenager undressing and in the nude, a district court heard.

The 18-year-old girl had quarrelled with the boyfriend, aged 25, over their relationship on March 6, 2016. After that quarrel, she then began to ignore him.

Both cannot be named due to a gag order to protect the girl's identity.

At the time, she shared the password to her Facebook account and the password to her e-mail account with him.

From March 7 to 10, 2016, the accused was at his home in Geylang East Avenue 1 when he accessed her account multiple times.

Deputy Public Prosecutor Jason Nim said the accused went ahead with the actions even though he knew they would cause an unauthorised modification of the contents of Facebook's server.

The victim did not consent to the boyfriend changing the login password to her account. By so doing, he locked her out of her own account.

Initially, each time he changed her login password, she would reset the password to her Facebook account by using her Gmail account.

He also changed her login password to her Gmail account, locking her out.

The victim could not reset the password to her Gmail account because he had taken away her phone after an earlier quarrel, before March 6 last year.

On March 9 and 10, 2016, he posted her nude photo and video on her Facebook profile.

She reported to the police on March 10 last year about the incident as she was afraid that more compromising photos or videos in his possession would be circulated online.

Police then enlisted her help to arrange a meeting with the accused so that they could arrest him.

On the evening of March 10, 2016, Station Inspector Jimmy Tan Thiam Soon, 43, and his two colleagues, dressed in civilian clothing, arrived outside the accused's home.

He received his girlfriend's text message to meet downstairs. When he was about to step out of the front door, he saw someone looking through the glass panel of the staircase door.

He decided to arm himself and tucked a 33cm-long bread knifes underneath his Bermuda shorts and covered the knife handle with the t-shirt he was wearing.

When he exited, Station Inspector Tan moved quickly towards him. The officer was about an arm's length away when he was about to identify himself by taking out his police pass. His colleagues rushed out of the staircase landing and shouted: "Police."

The accused took out the knife and slashed Station Inspector Tan's right bicep. The police officers managed to disarm him, contain his struggle and arrest him.

Station Inspector Tan suffered an 8cm-long cut on his right upper arm and was given a month's hospitalisation leave.

Seven months after the attack, the court heard that Station Inspector Tan still experienced occasional pain in his right arm when carrying heavy objects.

On Friday (Sept 22), the accused pleaded guilty to nine charges: causing grievous hurt to Station Inspector Tan; consuming and having drugs; four counts of cheating; and two counts of computer misuse.

District Judge Hamidah Ibrahim sentenced him to six years and two months in jail and six strokes of the cane, taking 13 other charges into consideration.

The sentence was backdated to his remand on May 7, 2016. He has a previous conviction for having underage sex with a girl, as well as army detention for drug consumption.

He was represented by Mr Josephus Tan and Mr Cory Wong.