Polish Prime Minister Mateusz Morawiecki said an unidentified object that left a large crater in Poland was likely part of a Russian attack.

The incident marks a significant breach of Polish territory, occurring deep within the borders of a NATO member state during an offensive targeting Ukraine.

Authorities identified the impact site near Tarnawa Kolonia, located approximately 100km [1] from the border with Ukraine. The object created a crater measuring 10m [1] wide, or about 33ft [1].

Morawiecki said the event coincided with a Russian attack on the city of Lviv. While the specific nature of the object has not been formally confirmed, the prime minister said it was likely a missile.

The discovery of the impact site has prompted a security review. The distance from the border suggests the object traveled a significant distance into Polish airspace before striking the ground.

Official reports indicate the object caused a 10m-wide crater [1] in the rural landscape. Polish officials continue to investigate the trajectory of the projectile to determine how it bypassed or penetrated regional air defenses.

The object caused a 10m-wide crater

The landing of a Russian-linked projectile 100km inside Polish territory increases the risk of direct military friction between Russia and NATO. This event underscores the volatility of the airspace over Eastern Europe as Russian strikes on Ukrainian cities like Lviv occasionally result in munitions crossing international borders.