He barely knew the boy.

But that did not stop Kamarul Zaman Othman, 48, from going to the boy's flat at about 10.30pm on May 12 last year for sex.

Even when the boy's blind grandfather was in an adjoining room, Kamarul was least bothered as he kissed the boy in the living room.

The pair later went to a toilet in the flat, where they continued kissing before the boy performed oral sex on Kamarul.

Yesterday, Kamarul, a security guard, was sentenced to 10 months' jail for having sex with the secondary school student, who cannot be named to protect his identity.

Another two charges were taken into consideration during sentencing.

The court heard that Kamarul got to know the boy through a mobile chat application on the day the offences were committed.

CONTACT NUMBERS

They exchanged contact numbers and agreed to meet for sex on the same day at the boy's home.

When Kamarul met him that night, he noticed the boy looked young and estimated that he was 15 years old.

Yet, Kamarul did not verify the boy's age.

Defence lawyer Ranadhir Gupta told the court yesterday it was the victim who had invited Kamarul, a first-time offender, to the flat even though his grandfather was at home.

Mr Gupta said his client was remorseful and cooperative during police investigations.

He added: "The victim, despite falling short of a few months of reaching the age of 16, knew exactly what he was doing. He was able to plan and execute his moves carefully."

Deputy Public Prosecutor Winston Man disagreed, saying Kamarul realised very quickly the victim was very young.

Kamarul's offence was discovered when the boy, prompted by his mother, made a police report on May 20, 2015.

He told police he had had sexual encounters with several men.

Kamarul is out on bail and is expected to surrender himself in mid-September to start serving his jail sentence.