According to the city mayor, Russian kamikaze drones damaged sunflower oil tanks at one of the ports in the Ukrainian coastal city of Mykolaiv late on Sunday.

Mykolaiv, one of Ukraine’s main ports, froze supplies at the outset of the Russian invasion, but Ukraine is pressing to reactivate the port to extend food imports under a deal mediated by the UN and Turkey.

“Three drones attacked an object of industrial infrastructure in Mykolaiv, where tanks containing sunflower oil were torched,” Mykolaiv mayor Oleksandr Senkevich said.

The attack took place hours before explosions in the capital Kyiv from suspected Iranian-made drones, increasingly used by Russia to attack deep into Ukrainian territory.

The regional emergencies service published photos of huge tanks with flames and smoke rising over them.

Mykolaiv, located near the Russian-occupied Kherson region, has been under constant shelling in recent months. Port terminals have already been hit at least twice – in June and August.

Ukraine is conducting a counter-offensive to try to push Russian troops out of the city of Kherson to the southeast.