During his periods of leave and after retiring from the Spanish police, Villarejo carried out several investigative works for companies—mainly a detective agency and a law firm.
[4] In the mid-1990s, he participated in the preparation of the Véritas report, commissioned by the Spanish Ministry of the Interior led by José Luis Corcuera (PSOE) and coordinated by Enrique de Federico, Commissioner of Judicial Police, in which he collected data on the private lives of judges such as Baltasar Garzón, politicians, journalists and businessmen such as Javier de la Rosa.
[6] In February 2017, to avoid prosecution, Villarejo leaked information to the press about the Spanish King Juan Carlos and the National Intelligence Center.
[7][8] In early 2019, José Manuel Villarejo sent a letter to Pedro Sánchez, Spain's Prime Minister, accusing Sanz Roldan of threatening certain judges of the National Court with data of their privacy so that they stop investigating issues that affect the CNI.
[13] In Jan 2022, Villarejo claimed at the Spanish High Court that the National Intelligence Service (CNI) was involved in the terrorist attacks in Barcelona and Cambrils in August 2017.
I worked with them to try to fix the mess of the famous attack by the Imam of Ripoll, which in the end was a serious mistake by Sanz Roldán, who miscalculated the consequences of making a small scare action in Catalonia", he stated.