US President Donald Trump has published a mysterious message on his social network Truth Social, warning that “something big” will happen overnight between Tuesday and Wednesday, according to regional media.

“Something big is going to happen tomorrow night. I’m going to tell it like it is,” Trump wrote. His statement has sparked a lot of speculation, especially given that he is expected to deliver a speech to a joint session of Congress.

According to media reports, US presidents usually deliver their State of the Union address after at least a year in office, but Trump has decided to do so earlier.

Republican Mike Johnson told “Fox News” that the president would not normally deliver such a speech at this stage of his term, but that it will still be a “State of the Union Address,” emphasizing that Trump has “put America on a stronger footing.”

Earlier, Trump wrote on his Twitter account: “The only President who did not hand over an inch of Ukraine to Russia, Putin, is Donald J. Trump. Remember that when you criticize the weak and ineffective Democrats, while the media publishes everything they say.”

This message has fueled even more speculation about what the “big surprise” he has warned about could be.