Ukraine conducted a massed drone strike of over 350 drones on the Primorsk oil refinery in the Leningrad region, setting it on fire.

Ukrainian drones attacked the Primorsk refinery, causing fires confirmed by local governor and reliable sources.

Ukrainian forces struck Russian military and oil infrastructure near Primorsk, Leningrad Oblast on May 3.

Ukraine struck a Russian Kalibr missile carrier and patrol boat in Leningrad Oblast, according to President Zelensky.

Ukraine struck Russian warships and a shadow tanker in Primorsk Port.

Ukrainian forces destroyed a Kara-kurt class missile boat in Primorsk on May 3, which carried Kalibr missiles.

NASA FIRMS detected fires in the port of Primorsk in the Leningrad region.

ASTRA OSINT analyst assessed likely damage to the oil jetty and 'Pantsir' anti-aircraft system.

Governor Oleksandr Drozdzenko confirmed the attack on the Primorsk commercial seaport and the subsequent fire.

Governor Oleksandr Drozdzenko stated that no oil spills were recorded and the fire consequences were dealt with.