The Russian military has wiped out a Ukrainian special forces unit that attempted to conduct an amphibious operation in Nikolayev Region, the Defense Ministry in Moscow has said, releasing a video showing the aftermath of a fierce battle.

In a statement on Friday, the ministry said Russian forces foiled an attempt by a Ukrainian sabotage and reconnaissance group to land on the Kinburn Spit, a narrow stretch of land that connects to Russia’s Kherson Region and extends into the Black Sea.

Officials said the group, which included up to 16 service members on two high-speed motorboats, attempted to disembark on the spit under the cover of two other vessels. They added that the force suffered its first casualties on the beach when it hit a minefield. Those who managed to reach dry land were cut down by small arms fire, the statement said.

After suffering heavy losses, the Ukrainian military tried to evacuate from the coastline. However, as they attempted to do so, two boats were destroyed by artillery and missile fire, the ministry said, adding that the total number of Ukrainian casualties was 12.

Officials also shared drone footage of the landing site, which shows at least one heavily damaged boat stuck on the shore, with several bodies lying around.

Several Russian Telegram channels covering the conflict said the Ukrainian troops had come under fire from mortars and multiple rocket launchers, and that up to 80% of the force had been eliminated. They also posted a highly graphic video from the battlefield, apparently further from the coast, showing what appears to be at least four Ukrainian soldiers killed in action.

Ukraine’s Main Directorate of Intelligence (HUR) has confirmed the raid, claiming its forces incurred losses on the Russians. The agency said Ukrainian special forces attacked Russian fortifications in the area and that the troops raised a Ukrainian flag near a monument to famed Russian commander Aleksandr Suvorov – located not far from the beach.

Ukrainian forces occasionally attempt to stage amphibious operations in Kherson Region, including across the Dnieper River, and sometimes in Crimea, although they almost never manage to hold on their gains for long.