___ This story is part of an AP/FRONTLINE investigation that includes the War Crimes Watch Ukraine interactive experience and and upcoming documentary, “Putin’s Attack on Ukraine: Documenting War Crimes,” which premieres 10/9c Oct. 25 on PBS.Video posted to social media on July 9 shows a train pulling up to the Melitopol Elevator, a massive grain storage facility, with green hopper cars marked with the name of the Russian company Agro-Fregat LLC in big yellow letters, along with a logo in the shape of a spike of wheat.Siguta, along with four other top Russian occupation officials, was sanctioned by the U.S. government on Sept. 15 for overseeing the theft and export of Ukranian grain.Videos posted on social media in recent months show a steady stream of grain transport trucks moving south through occupied areas of Ukraine with the letter “Z” painted on their sides, a wartime symbol for Russia and its military forces.A copy of the ship’s manifests obtained by AP claimed its port of origin was Kavkaz, Russia."