translate English to French: The complainant said that the reasons for the security screening investigation were not provided, nor had he been informed that allegations had been made against him, and that damaging letters had been sent to the department where he worked.
Il a précisé qu'on ne l'avait informé ni des raisons de l'enquête de sécurité ni de l'existence d'allégations contre lui, et que des lettres contenant des propos préjudiciables à son endroit avaient été adressées à son ministère employeur.