Polish Prime Minister Donald Tusk stated that an object which struck a field in eastern Poland during the early hours of Thursday was most likely a Russian missile.

The unknown projectile formed a crater 10 meters across near the village of Tarnawa Kolonia, situated 92 km from the Ukrainian border, amid a major Russian assault targeting Lviv, Kyiv and areas close to Kryvyi Rih.

Tusk noted at a special gathering in Lublin that initial signs suggested the airspace violation involved a Russian Kh-101 cruise missile.

After visiting the location, he added that military specialists found most recovered pieces consistent with a Russian Kh-101 missile.

Although the incident near Tarnawa Kolonia caused no reported injuries, the prime minister emphasized the seriousness of the event.

He confirmed there was no immediate danger since the object avoided populated zones and noted readiness to intercept it had the flight continued.

Nato confirmed ongoing close coordination with Polish officials, with Supreme Allied Commander Gen Alexus G Grynkewich pledging continued defense measures for alliance territory.

Polish Defence Minister Wladyslaw Kosiniak-Kamysz reported around 20 objects detected near Polish airspace overnight, with further technical examination underway.

Ukraine's acting Foreign Minister Andriy Sybiha asserted that a Russian Kh-101 cruise missile had entered Polish territory during the strikes on Ukraine, breaching Nato airspace.

Tusk maintained contact with European counterparts, while European Council head António Costa highlighted that the large-scale attack on Ukraine reaffirmed Russia's threat to broader security.

At least eight fatalities and numerous injuries occurred across Ukraine, including six members of a single family near Kryvyi Rih, with additional casualties reported in Lviv close to the Polish border.

Several Russian drones and one unarmed missile have previously landed in Poland since the full-scale invasion of Ukraine began in February 2022.

In November 2022, two Polish farmers died from a missile impact near the border, later attributed to a Ukrainian air defense response.

Polish forces tracked the object around 03:40 on Thursday and dispatched an F-16 jet to engage it before it vanished from radar, prompting a helicopter search of the area.

Air raid alerts sounded in Lublin and Krasnystaw due to the nearby strikes in Ukraine, with local residents hearing a loud explosion near 04:00 and police locating the site roughly an hour afterward.

The Polish leader had held talks with Ukrainian President Volodymyr Zelensky in Lublin the prior evening following Zelensky's discussions with US President Donald Trump.