Under the leadership of the staff of the Investigative Department of Sumy Police Department of the MDNP in Sumy Oblast, with the participation of the teachers of the Department of Legal Disciplines, Viktor Kyselov and Valerii Matus, a practical session was held with 3rd-year cadets of Sumy Branch of Kharkiv National University of Internal Affairs on the topic "Actions of investigative and operative groups of the National Police on released from the occupation of the territories and documenting war crimes".