The incident took place at about 7.50pm at the car park near Block 333 Ang Mo Kio Avenue 1.
The husband apparently panicked when he heard his wife scream and swerved, hitting two other motorcycles parked nearby.
Said Lindy Sim who shared a video of the incident:
“Husband step wrong pedal step reverse gear n crash wife from the back. Wife died on the spot.”
The aunty was sent to Tan Tock Seng Hospital but later died from her injuries.
Police are treating the incident as an accident and no arrests have been made while investigations take place.