“The Ukrainian side one more time regrets the inadvertent mistake that led to the incidental at the Police Headquarters,” reads a joint message by the interior ministers of Poland and Ukraine, issued after the meeting, according to Mariusz Kaminski, said yesterday. In addition to the head of the Polish Ministry of interior Affairs and Denys Monastyrski, who is the head of the Ukrainian Ministry of interior Affairs, the main commander of the Police, General Insp. Jaroslaw Szymczyk and the head of the State Service of Ukraine for Emergency Situations Sergey Kruk.