The main trial before the War Crimes Department of the High Court in Belgrade in the Trnje case, which was scheduled for September 13 2017, was not held because the defendant Pavle Gavrilović did not appear before the Court, again, because he allegedly fell ill on the day of the trial. His absence was, as in previous occurrences, justified on the basis of medical records issued by the Military Hospital in Niš. The second defendant, Rajko Kozlina, used to use a similar tactics of absence from the trial, with the only difference that he received confirmation of hospitalization from the Belgrade Military Medical Academy. Both defendants are still members of the Army of the Republic of Serbia. The Humanitarian Law Center (HLC) points out that this is a deliberate obstruction by the defense, with the complicity of military medical institutions, and calls on the court to, by at least placing the defendants in custody, put an end to an obvious obstruction of justice.