 However, after the terrorist attack on World Trade Centre and Pentagon in the United States on 11 September 2001, Malaysia is facing growing threats from regional terrorist groups, the most notable is Jemaah Islamiyah (JI).The effectiveness of anti-terrorism efforts in Malaysia is dependent on cross-agencies co-operation as well as international co-operation in terms of intelligence sharing and training in handling the threats of terrorism.These are the events related to terrorism and counter-terrorism in Malaysia.