The president provided no further details on the alleged military action, with the Pentagon referring inquiries to the White House.
If confirmed, this would mark the first known land attack within Venezuela as part of the administration's ongoing pressure campaign against the nation.
The U.S. has previously conducted strikes on alleged drug boats in the Caribbean, amassed warships, authorised CIA covert operations, and seized oil tankers in the region.
Trump justified these actions by citing Venezuela's oil, alleged drug trafficking, and the sending of criminals, while facing pushback from some lawmakers and mixed public opinion.