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 G7 will explore ways of using the future income from frozen Russian assets to help Ukraine, finance chiefs from the Group of Seven industrial democracies said on Saturday.
China ended two days of war games around Taiwan in which it simulated attacks with bombers and practised boarding ships, exercises that Taiwan condemned as "blatant provocation" on Saturday.
The world's largest election may become the hottest on Saturday as Indians participate in the next-to-last voting phase, with temperatures forecast to surge to 47 degrees Celsius in the capital, New Delhi.
The International Court of Justice's (ICJ) rulings on the military attack on Rafah, Southern Gaza, are 'binding' according to a statement by the UN Secretary-General António Guterres.
Judges at the top United Nations court ordered Israel on Friday to halt its military assault on the southern Gaza city of Rafah, in a landmark emergency ruling on South Africa's case accusing Israel of genocide.