Boluarte said the remarks made earlier on Friday by Mexican President Andres Manuel Lopez Obrador about her administration go against the international right to non-interference.

Mexico's Foreign Ministry did not immediately reply to a request for comment.

Boluarte ascended to the South American country's presidency on Dec. 7 after former President Pedro Castillo was impeached following an attempt to dissolve Congress.

Boluarte accused Lopez Obrador of backing Castillo's attempt at a "coup d'etat."

"With his statements, Mr. Lopez violates the principle of international law about non-interference in internal affairs, as well as those referring to the defense and promotion of democracy," she said in a television address.

Lopez Obrador told a news conference on Friday that Mexico will keep supporting Castillo, as he was "illegally ousted."

Boluarte's remarks come after a meeting between Lopez Obrador and Castillo's wife, Lilia Paredes, in Mexico earlier this week.

(Reporting by Marco Aquino; Additional reporting by Carolina Pulice; Writing by Valentine Hilaire; Editing by Brendan O'Boyle and William Mallard)