A senior U.S. intelligence official said Russian missiles crossed into Poland, killing two people, the Associated Press reported on Tuesday.
Firefighters said that two people were killed in Przewodow, a village in eastern Poland near the border with Ukraine.
"Firefighters are on the spot, it's not clear what has happened," said Lukasz Kucy, officer on duty at a nearby firefighters' post.
Polish Radio ZET reported earlier that two stray missiles hit Przewodow on Tuesday, killing two people, without giving any more details.
Russia was pounding cities across Ukraine with missiles on Tuesday, in attacks that Kyiv said were the heaviest wave of missile strikes in nearly nine months of war.
Polish Prime Minister Mateusz Morawiecki has called an urgent meeting of a government committee for national security and defense affairs, the government spokesman said on Twitter.
President Volodymyr Zelensky said that Russian missiles had hit Poland, noting that he had warned before that Russian aggression was not limited to Ukraine.
