They had sex with minors via...
1 SEX APP
A jobless man was jailed for three years on Dec 4 after admitting to three of five charges of sexually abusing a 14-year-old boy.
Chock Soon Seng, 37, had also threatened to put the teenager's naked pictures online and send them to his friends.
The victim received a message from Chock earlier this year after downloading a social networking app on his mobile phone. The app is intended for men to meet other men for sexual activities.
Some time in February, the boy met Chock alone in his Hougang Avenue 8 flat.
Chock took him to his bedroom and photographed him naked with his iPad. After that, they performed oral sex on each other.
Chock was also jailed for 10 months in 2010 for trying to persuade two 13-year-old boys to masturbate while he watched.
He was working as a primary school teacher when he committed these earlier offences. He tendered his resignation after he was charged.
A man who had sex with an underage girl he befriended through Facebook was jailed for 10 months on Sept 17.
Syahrul Mohd Hanafiah was 21 when he had sex with a female student at a Geylang hotel in 2011. She was 13 then.
The victim, who is now 16, got to know Syahrul through the social media platform in early 2011. They began chatting on Facebook and subsequently became a couple on Facebook.
Some time before her 14th birthday, she met him for the first time at Compass Point mall in Sengkang.
He took her to the hotel on his motorcycle and had sex with her. After that, the two did not meet and did not remain in touch.
3 DATING APP
A former advertising director had bondage sex with an underage girl on two occasions after they first met via dating website OkCupid.The girl was 15 then.
The 35-year-old had explicitly stated on his profile that he was into "bondage and discipline, dominance and submission, sadism and masochism" - or BDSM for short.
He was jailed for a year on Jan 21 for having consensual sex with the underage girl. During one of their sessions in early November 2012, he tied the girl up with a rope before snapping pictures of her.
The incident came to light when a church friend informed the girl's father that sexually explicit photographs of her were circulating on the Internet.