Russian troops hit port infrastructure in southern Ukraine with Shahed drones near the border with NATO member Romania overnight, the Ukrainian military and prosecutor-general’s office said Wednesday, damaging a grain elevator and causing a fire at facilities that transport the country’s grain exports.

Since leaving a deal that allowed Ukraine to export grain to world markets through the city of Odesa, Russia has hammered the country’s ports with strikes. Since July 17, Russian forces have fired dozens of drones and missiles at the port of Odesa and the region’s river ports, which are being used as alternative routes.