Late in June the authorities start arresting the participants in the Poznań events. After a preliminary, brutal interrogation the arrested persons are transferred to prisons.

In September and October trials of persons participating in the “Poznań events” take  place.

October 8  — three persons accused of taking part in an assault on a security service (UB) functionary  are sentenced to 4-4.5 years in prison.

October 22 — with the exception of the convicted persons all the arrested are released from prison.

Janina Jankowska-Lasecka:

  The most cruel interrogations were those conducted in Kochanowskiego street. I will never forget a pretty Gipsy girl from my cell who was being interrogated there. [...] When she returned to the cell there was not a single tooth left in her upper jaw. We managed to learn from her that she had accidentally been present during the attack on the prison. They massacred her terribly. People were being taken to interrogations at different hours of day and night. Fear paralysed me whenever I had to walk along the corridor. From the rooms that I was passing inhuman screams and howling, which resembled that of slaughtered animals, could be heard.

   [...] Gomułka liberated us from all that. I wasn’t put on trial nor had I to face any proceedings. The experience of these several months aged me.