Man, 24, and girl, 15

Chee Wei Tong, 24, was sent to jail for 30 months on April 8 for having underage sex with a 15-year-old girl.

The former customer service officer had sex multiple times at his flat and at an HDB staircase landing in August 2012.

He had met the girl on a dating website and convinced her to have sex with him. The girl was a virgin.

Man, 24, and girl, 13

A Singapore Civil Defence Force deserter was jailed a year on April 22 for underage sex and desertion.

Khairul Juperi, 24, who is married with two children, had sex with a 13-year-old girl last November.

The sexual encounter was uncovered when police found the girl who was a runaway.

Man, 30, and girl, 14

Eugene Prem Kumar, 30, was a delivery driver when he had underage sex with a student shortly after getting to know her on Facebook in Sept 2010.

Last month, he was jailed 24 months after admitting to having sex with the 14-year-old at his flat.

He had asked her to be his girlfriend and initiated sex. She later told a social worker at Gracehaven Home.

Kumar is married with a daughter.

Man, 38, and girl, 17

A construction worker became the 24th man to be jailed last month for engaging in commercial sex with a 17-year-old girl from China, who was forced into prostitution by her pimp.

Li Zhiguang, 38, admitted to paying $60 for her sexual services at a hotel in Geylang in May 2013.