Polish authorities have arrested a man suspected of planning an assassination attempt against Prime Minister Donald Tusk and Defence Minister Władysław Kosiniak-Kamysz. The Interior Ministry announced the arrest, but details regarding the specifics of the plot remain unknown. Jacek Dobrzynski, a spokesperson for the Polish security services, described the case as extremely serious, stating there is a high probability the threats could be carried out. Both Tusk and Kosiniak-Kamysz are scheduled to attend a major security conference in Warszawa. The conference will also be attended by Norwegian Prime Minister Jonas Gahr Støre and several Norwegian ministers. The situation raises concerns about security at the event, and investigations are ongoing in Poland.