The suspect According to the
Internal Security Department (ISD), the suspect was a 16-year-old
Protestant Christian of
Indian ancestry who was motivated by
Islamophobia and fascinated with violence. After watching several
ISIL propaganda videos including one showing the execution of Ethiopian Christians, the suspect came to believe that ISIL represented
Islam and that Islam called on its followers to kill non-Muslims.
Planning and manifestos Following the
2020 Nice stabbing, the suspect began making detailed plans to attack two mosques on 15 March 2021, the second anniversary of the Christchurch mosque shootings. After initially considering the An-nur Mosque, the suspect selected the
Yusof Ishak Mosque in
Woodlands due to its proximity to the Assyafaah Mosque in
Sembawang. According to the ISD, the suspect conducted online research and reconnaissance using Google Maps and Street View on both mosques to prepare for the attacks. Despite not having a driving license, he intended to obtain a car for driving between the two targets. Following Tarrant's example, the suspect bought a tactical vest from internet auction website
Carousell in November 2020, which he intended to strap a mobile device for livestreaming his attacks. He also tried to purchase a gun via the messaging platform
Telegram but abandoned it after suspecting a scam. The suspect also admitted that his plans to obtain firearms were thwarted by Singapore's strong gun control laws. The suspect also explored building a
Triacetone Triperoxide bomb but abandoned it due to logistical and personal safety concerns. Finally, the suspect settled on a
Smith & Wesson machete on
Carousell but was not able to purchase it prior to his arrest. The suspect also prepared two documents which he intended to disseminate prior to his attacks. The first document was a message to the people of France in response to the 2015 Paris attacks and the 2020 Nice stabbing which advocated conflict against Muslims. The second document was an uncompleted manifesto outlining his hatred for Islam and rejection of
pacifism. The suspect expressed hope that his actions would challenge those who believed that
Islamic extremism was right. He also praised Tarrant (the perpetrator of the Christchurch attacks) as a "saint" and described the Christchurch attacks as a "justifiable killing of Muslims." ==Arrest, investigation, and detention==