The SBU warned VACS of a possible threat of a terrorist attack: the prosecutor was not allowed to read the letter during the hearing in the case of SBU General Serhiy Duka, it was revealed that the security service had sent a letter to the security service before the hearing warning of a possible threat of an attack in court. It was this document that justified the need to hold part of the session in closed session. However, SAP prosecutor Mikola Kras stated that he was not allowed to read the letter, even though he requested such an opportunity.