The incident reportedly occurred when the Malaysian driver, who was operating a BMW, allegedly obstructed the path of the Singapore-registered Toyota Altis driven by the Singaporean man. The Singaporean then honked at the BMW driver, expressing dissatisfaction.
https://www.youtube.com/watch?v=FvTexE3ZYtw
https://www.youtube.com/watch?v=FvTexE3ZYtw