President Trump sought to explain his reference to a nonexistent terrorism incident in Sweden at a rally Saturday night, pointing to a story from Fox News. 

“My statement as to what’s happening in Sweden was in reference to a story that was broadcast on @FoxNews concerning immigrants & Sweden,” Trump tweeted Sunday.

Trump confirmed speculation that a Fox News story about immigration and crime rates that aired on Tucker Carlson's show was the origin of his statement.

At his campaign-style rally Saturday in Florida, Trump referred to what happened “last night” in Sweden — sparking questions from Americans and Swedes.

“When you look at what’s happening in Germany, when you look at what’s happening last night in Sweden — Sweden!" he said during the rally. "Who would believe this? Sweden! They took in large numbers, they’re having problems like they never thought possible.”

The Swedish Embassy in Washington, D.C., asked the U.S. to clarify what incident Trump was referring to on Sunday. 

The country also said it did not know of any “terror-linked major incidents” Trump may have been referring to.

Former Swedish Prime Minister Carl Bildt also questioned Trump’s claims.

“Sweden? Terror attack? What has he been smoking? Questions abound,” he tweeted.