Police investigate A23 Purley Way oil spill
Police are investigating whether oil was deliberately spilled on the road at a busy junction in south London.
The A23 Purley Road in Croydon was closed between Croydon Road and Fiveways Corner at 01:00 BST after oil was found across both carriageways.
A Transport for London spokesman said investigations were ongoing but it was not a tanker spill.
He said an assessment was being carried out and the road may need resurfacing. Drivers were urged to avoid the area.