Edmund Tan Hui Shi offered between S$100 and S$500 to the three girls for sexual acts with him.

The Ministry of Education says it works with schools and institutes of higher learning to conduct workshops, scenario-based discussions and emergency exercises on threats from outside and within schools.  

The coordinating minister for national security also said that the government is studying the best way to protect youths on social media amid the recent detentions under the Internal Security Act.

A 14-year-old boy created a 21-page manifesto detailing an attack on his schoolmates and teachers and admitted he would have carried out the stabbings.

Amos Yee Pang Sang is set to plead guilty on Sep 7.

Under the agreement, both countries "commit to endeavour not to adopt or maintain export restrictions on agreed essential items", including petroleum oils such as diesel and liquefied natural gas.