Ukrainian officials press for information on prison attack

FILE - Investigators put fragments on display of what they say were rockets fired from U.S.-supplied HIMARS systems near a destroyed barrack at a prison in Olenivka, in an area controlled by Russian-backed separatist forces, eastern Ukraine, on July 29, 2022. Ukrainian officials say they are struggling to establish the truth surrounding the explosion in a prison that killed dozens of Ukrainian prisoners of war captured by the Russians following the fall of Mariupol. (AP Photo)