The car driven by two young French citizens, Gilles Thonon and Françoise Anis, was detained at the border crossing in Dolni Dvoriste on April 27, 1981. In addition to the forbidden literature, the car was also tagged with the addresses of Czech subscribers of the Svědectví magazine. Soon after, the State Security launched an extensive police operation, in which around thirty people were detained in Prague, Brno and Bratislava. Against the twelve detainees, the prosecution for the subversion of the Republic, later known as the event "Jiřina Šiklová et al." The arrest was imposed on French citizens - student François Anis and lawyer Gilles Thonon, who were expelled from Czechoslovakia on 20 May 1981 along with writer Eva Kanturkova, sociologist Jirina Siklova, journalist Karel Kyncl and Jiří Ruml, Jan Ruml, prof. Miroslav Kusy, historian Milan Šimeček, Jiří Müller, historian Jan Mlynarik and the poet Jaromír Horec. With eight in custody, M. Kusý and J. Müller were released. Milan Šimečka was taken into custody on 6 May 1981 in Bratislava and later transferred to the detention facility in Prague-Ruzyne. The great international pressure and the detention of the dissidents led to a major political process not taking place. The detainees were gradually released. Milan Šimečka was released from custody between the last 27 May 1982 together with Jiřina Šiklová, Jan Mlynárik and Jiří Ruml. The criminal prosecution of all accused persons, however, formally continued until the end of 1989.