Peru's President Dina Boluarte announced the return of the country's ambassador in Mexico in response to comments from her Mexican counterpart branding her government as unconstitutional.
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 December 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 defence 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.
An explosive-laden car rammed into a Pakistani military convoy on Saturday in a town near the Afghan border, killing at least 13 soldiers, sources said.
Radiation levels in the Gulf region remain normal after the 12-day Israel-Iran conflict severely damaged several nuclear facilities in Iran, Director General Rafael Mariano Grossi of the International Atomic Energy Agency (IAEA) said.
Rwanda and Democratic Republic of Congo signed a US-brokered peace agreement on Friday, raising hopes for an end to fighting that has killed thousands and displaced hundreds of thousands more this year.
The US Supreme Court on the last day of rulings for its current term gave Donald Trump his latest in a series of victories at the nation's top judicial body, one that may make it easier for him to implement contentious elements of his sweeping agenda as he tests the limits of presidential power.
Polish President Andrzej Duda arrived in Kyiv on Saturday for a meeting with Ukrainian President Volodymyr Zelenskyy, Duda's office said, as Kyiv aims to build support among allies at a critical juncture in its grinding war with Russia.