On 15 June 2000, 65-year-old part-time taxi driver Ong Huay Dee was murdered by a passenger while he was driving along Pasir Ris in Singapore. Ong's passenger and killer, 25-year-old Thai national Khwan-On Natthaphon, was arrested and charged for the murder. Even though Khwan-On raised a defence of diminished responsibility and also stated he never intended to kill Ong, the trial court nonetheless rejected his defences and regarded him as a "cold-blooded murderer" for having intentionally caused the fatal head injuries on Ong. Hence, Khwan-On was found guilty of murdering Ong and sentenced to death in August 2001, and after losing his appeal, Khwan-On was hanged on 27 September 2002.

On 8 August 2000 in Singapore, a group of three men, who were armed with firearms with an intent to commit robbery, had robbed and killed a taxi driver in midst of a planned crime spree. The victim was a 42-year-old taxi driver named Koh Ngiap Yong, whose taxi was taken by the trio as an escape vehicle for future robbery crimes and whom the three men killed by using a bayonet to stab him to death. In the aftermath of Koh's murder, the robbers had committed yet another robbery and also shot and killed their next victim, 39-year-old Jahabar Sathick, an Indian moneychanger.