The IPCC stated that a loaded Bruni BBM blank-firing pistol converted to fire live rounds was recovered from the scene. The IPCC had commissioned tests on the pistol by the Forensic Science Service and had received advice that it was an illegal firearm.[3][9][10][11][12] The gun was wrapped in a sock, a practice allegedly used to avoid leaving evidence if it was used.[13] The IPCC announced on 9 August that there was no evidence that the gun had been fired, that this had not been ruled out and further tests were being conducted.[3][14][15] On 18 November 2011 it was announced that the IPCC was to investigate whether the same gun had been used in an earlier incident, on 29 July 2011, when a man was assaulted in Hackney.[16] Video and other evidence was obtained by the IPCC showing Duggan had obtained the firearm earlier in the day. His fingerprints were found on a cardboard box which appeared to have contained the gun when he collected it. The sock and gun were taken out of the box before Duggan was shot. His DNA and fingerprints were not recovered from the sock which wrapped the gun, nor from the weapon itself.[17]