In 1999, the third inquiry of John Stevens into allegations of collusion between the security forces and loyalist paramilitaries concluded that there was such collusion in the murders of Finucane and Brian Adam Lambert. As a result of the inquiry, RUC Special Branch agent and loyalist quartermaster William Stobie, a member of the UDA was later charged with supplying one of the pistols used to kill Finucane, but his trial collapsed because he claimed that he had given information about his actions to his Special Branch handlers. The pistol belonged to the UDA, which until August 1992 was a legal organisation under British law. A further suspect, Brian Nelson, was a member of the Army's Force Research Unit. He had provided information about Finucane's whereabouts, and also claimed that he had alerted his handlers about the planned killing.