 On 20 November 2009, after a 14-month investigation the IPCC found no evidence of dishonesty or impropriety.The IPCC managed investigation revealed that Dizaei was in fact owed £1,850, which was repaid to him by the Metropolitan Police Authority

On 27 December 2009, Dizaei accepted a substantial payment and an apology from the "News of the World" for allegations arising from an investigation by Mazher Mahmood.The paper backed down and apologised in the face of legal action from Dizaei, after Mahmood claimed the officer "employed an illegal immigrant as his right-hand man and took him to the heart of the British establishment."