State Department officials are working to determine the circumstances surrounding the reported strike in Poland, Principal Deputy spokesperson Vedant Patel told reporters.
Calling the reports “incredibly concerning,” Patel said they were in close communication with the Polish government and other NATO allies to “gather more information.”
“We can’t confirm the reports or any of the details at this time. But I can assure you we will determine what happened and what appropriate next steps would be,” he said during a briefing Tuesday afternoon.
U.S. national security adviser Jake Sullivan has spoken with Chief of the National Security Bureau of Poland Jacek Siewiera, according to White House National Security Council spokesperson Adrienne Watson.
“We’ve seen the reports out of Poland and are working with the Polish government to gather more information,” Watson said in a statement, also adding that the White House cannot confirm the reports or any details at this time.
President Joe Biden has been briefed on the reports and will be speaking with Polish President Andrzej Duda “shortly,” the White House said.
-ABC News’ Shannon K. Crawford and Ben Gittleson