Panamanian President Jose Raul Mulino said on social media on Thursday that he would speak to his U.S. counterpart Donald Trump at 3:30pm on Friday afternoon, amid an increasingly tense standoff over the Panama Canal.

On his first trip as secretary of state, Marco Rubio will also visit four other Latin American countries and press immigration issues.

President José Raúl Mulino on Thursday denied a claim by the Trump administration that this Central American country had agreed to eliminate tolls for U.S. government ships using the Panama Canal, in an apparent setback to U.