A patch of sand last night appeared to mark the spot where a mother struck her six-year-old daughter, who later died, as she parked her car in Hounslow West.
Police and medics tried in vain to resuscitate the girl after the tragic accident in the car park behind Hounslow West underground station yesterday morning, but she was pronounced dead at hospital later that day.
Yesterday evening, other than a solitary officer patrolling the scene of the crash in Bath Road, the sand and some tattered police tape were the only clues to that morning's devastating events.
One man living around the corner said he had heard a scream, which he assumed was that of the girl as she was hit, before sirens and the whirring blades of London's Air Ambulance filled the air.
But many of those in the neighbourhood remained oblivious to the tragedy which had unfurled almost on their doorstep.
The girl has yet to be named. Anyone with information about the incident is asked to call British Transport Police on 0800 40 50 40.