SINGAPORE - A man threatened to post a video of a 22-year-old woman performing a sexual act on him, if she did not pay him $50 and perform the act again.

Thevandran Pachaimuthu Yanasakaran, 20, a part-time flight host, admitted to committing extortion on July 16 this year. This was while he was already on two years' probation for robbery.

On Monday (Nov 9), he was sentenced to the Reformative Training Centre for the latest offence. The minimum stint is 18 months and maximum, three years.

Investigation showed that some time in the first half of this year, after they had come to know each other online, he met the woman at Queenstown MRT station .

They went to a staircase landing of a block nearby where she agreed to perform oral sex on him. He took out his mobile phone and recorded this, with her consent.

He promised her that he would not show the video to anyone else. They stopped contacting each other after that.

On July 16, he sent a WhatsApp message to her with the intention of getting quick money from her for his daily expenses.

He threatened to post the video on a pornographic website if she did not pay him $60. He also wanted her to perform oral sex the next day.

Fearing for her reputation, she agreed to his demands. As she did not have enough money, he agreed to let her pay $50 instead.

The next day, he used his new mobile phone number to WhatsApp her again. During these text messages, he asked her to send the $50 via bank transfer and repeated his threat to post the video. She lodged a police report.

District Judge Shaiffudin Saruwan said it was quite sad that despite being given a second chance, Thevandran did not make use of it.

"What you did is a very serious offence,'' he said before telling Thevandran to reflect on his actions seriously and take positive steps to rehabilitate while in reformative training.

The maximum for the offence is five years' jail and caning.