What did Trump really mean by his Sweden comment?

U.S. President Donald Trump's reference to "what's happening last night in Sweden" during a rally in Florida raised questions in Sweden and over the internet about what he really meant.

According to CNN, Trump referenced the Scandinavian nation, known for liberally accepting Syrian refugees, during a section of his speech decrying the dangers of open borders.

"You look at what's happening in Germany. You look at what's happening last night in Sweden. Sweden, who would believe this? Sweden. They took in large numbers. They're having problems like they never thought possible. You look at what's happening in Brussels. You look at what's happening all over the world. Take a look at Nice. Take a look at Paris," he said in a rally in Florida.

He went on to name Brussels, Nice and Paris - European cities that have been struck by deadly terror attacks.

Top Trump aides, in his month-old administration, have faced criticism and ridicule after speaking publically about massacres that never took place.

Trump appeared to be referring to the recent terror attacks in Germany and elsewhere, but no such attack has occurred in Sweden.

The White House did not immediately respond on Sunday morning to questions about what Trump meant.