A security inquiry on the prostitution scandal concluded that there had been "nothing in (Lambton's) conduct to suggest that the risk of indiscretions on these occasions was other than negligible." Lambton stated that he had never taken his red state boxes of government documents with him when he visited Norma Levy. The security inquiry was held due to fears that the prostitution scandal may have involved an actual or potential breach of national security (as had occurred in the Profumo scandal in the 1960s).