Russian missiles hit infrastructure in Odesa in southern Ukraine on Saturday, the Ukrainian military said, dealing a blow to a deal signed on Friday to unblock grain exports from Black Sea ports. The landmark deal signed by Moscow and Kyiv on Friday is seen as crucial to reigning in global food prices and would allow certain exports to be shipped from Black Sea ports, including the hub of Odesa.

“The enemy attacked the Odesa sea trade port with Kalibr cruise missiles,” Ukraine’s Operational Command South wrote on the Telegram messaging app. Two missiles hit infrastructure at the port, while another two were shot down by air defence forces, it said.