...Mr Schwarz, representing Ibori's London lawyer who was jailed as part of the case, said: "The key culprits appear to be the key players who are the senior investigating officer, DI Gary Walters, and two of the key investigators who are DC John McDonald and DC (Peter) Clark."
Mr Schwarz told the committee there were records that "show about half a dozen payments totalling £20,000 over eight or nine months."
The allegations were originally made in an anonymous bundle of documents sent to former Metropolitan Police Commissioner Sir Paul Stephenson and the Independent Police Complaints Commission (IPCC) last summer.
In October last year, the IPCC instructed the Metropolitan Police's Directorate of Professional Standards (DPS) to conduct an internal investigation.
The paperwork included what purported to be detailed invoices and expense ledgers from Risc Management Ltd, headed at the time by two former Scotland Yard detectives, Keith Hunter and Cliff Knuckey...