Detectives are examining a computer, paperwork and a phone found in a bin near the riverside London home of Rebekah Brooks, the former chief executive of News International.
The Guardian has learned that a bag containing the items was found in an underground car park in the Design Centre at the exclusive Chelsea Harbour development on Monday afternoon.
The car park, under a shopping centre, is yards from the gated apartment block where Brooks lives with her husband, a former racehorse trainer and close friend of the prime minister David Cameron.
It is understood the bag was handed into security at around 3pm and that shortly afterwards, Brooks's husband, Charlie, arrived and tried to reclaim it. He was unable to prove the bag was his and the security guard refused to release it.