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.
The death toll from Venezuela's twin earthquakes has risen to 3,535, authorities said on Monday, while nearly 18,000 people remain homeless more than a week after the disaster struck the capital and nearby coastal areas.
Russia hammered Ukraine with missiles and drones early on Monday, killing at least 26 people and exposing Kyiv's critical shortage of US-made interceptors, officials said, just days after the deadliest attack on the Ukrainian capital this year.
Twenty-five people were killed and about 100 injured as security officials struggled to contain two days of clashes between rival groups of inmates at a prison in Sri Lanka, authorities said on Monday, marking the deadliest such violence in years.
At least six people have been killed when a group of buildings collapsed in the eastern suburbs of India's Mumbai on Sunday, the latest casualties of heavy rains that have disrupted travel and shut down schools in the city.
A wildfire burning out of control in southern France has forced the evacuation of over 10,000 people from two dozen small towns and villages near the Spanish border, and officials said on Monday strong winds would further fan the flames.