A full-time national serviceman was jailed for three months on Monday for engaging in commercial sex with a minor in an online vice ring case. Abu Shah Mohamed Abdul Mutalif, 22, who was among 10 men charged in June, is the third person to be dealt with.

Ex-port inspector and police officer Alvin Chen Zi You, 32, - formerly known as Tan Zi Yu - and bellhop Muhammad Ibrahim, 24, have been jailed 12 weeks each for paid sex with the minor.

In total, Abu Shah will serve 11 months' jail as the eight months imposed for his drug consumption charge was ordered to run consecutively.

He admitted to paying $250 for the sexual services of the 16-year-old student at Bay Hotel in Telok Blangah Road on Feb 21 this year. The minor had been procured for prostitution by Malcolm Graham Head, 33, and his girlfriend, Veronica Patricia Rio, 19, in October last year.

He operated his online prostitution ring by advertising the sexual services of his working girls on various websites.

Initially, Head tricked the minor into believing that she was going to be a social escort with "fast cash'' and "high pay''.

At times when the minor did not want to serve clients, she would be fed "Ice'' (methamphetamine) to keep her awake or she was beaten.

Abu Shah, who went absent without leave in March, came across a website offering the services of a female on Feb 20 and booked her services. He was quoted a price of $250. The minor turned up at the hotel after midnight and Abu Shah paid her after having sex with her. He neither asked for her identity card nor her age.

The pimp's case is pending.