The Singapore Police Force said that the accident involved a car "that was believed to have self-skidded along Racecourse Road towards Tessensohn Road".
Jessica McLaughlin, 24, died after her store manager allegedly attacked her, sitting on her and preventing her breathing, ultimately leading to her death.
The 79-year-old, who is facing two charges related to the case of former transport minister S Iswaran, was originally set to plead guilty on Thursday, July 3.