Russian drones have reportedly caused serious damage at the Ukrainian port of Izmail as Moscow steps up its attacks on its neighbor's agricultural and port infrastructure following its withdrawal from a deal allowing the export of Ukrainian grain.

"Another elevator in the port of Izmail, Odesa region, was damaged by Russians. Ukrainian grain has the potential to feed millions of people worldwide," the Ukrainian Defense Ministry wrote on the messaging platform X, formerly known as Twitter.

Izmail, located on the River Danube directly on the border to NATO member Romania, is a key port for grain export from Ukraine that allows the produce to be transported by barge to the Romanian Black Sea port of Constanta for shipment onward.

Several grain warehouses at the port were destroyed by a previous Russian attack in late July.