LIMA — Peru has announced it is breaking off diplomatic relations with Mexico after its government granted asylum to a former Peruvian prime minister facing charges for a 2022 coup attempt.

Peruvian Foreign Minister Hugo de Zela expressed his "surprise and deep regret" after learning Betssy Chávez was being given refuge at the Mexican embassy in Peru.

"Given this unfriendly act... the Peruvian government has decided to sever diplomatic relations with Mexico today," Zela said.

Chávez had been imprisoned in June 2023 over her alleged role in ousted Peruvian president Pedro Castillos's plan to dissolve congress. She was released by a judge on bail in September and had denied the charges against her.

Peru also accused Mexico of "repeated instances in which the current and former presidents of that country have interfered in Peru's internal affairs".

"The truth is, they have tried to portray the authors of the coup attempt as victims, when in reality, Peruvians live and want to continue living in democracy, as recognised by all countries in the world, with the sole and lonely exception of Mexico," Zela added.

Prosecutors are seeking a 25-year sentence for Chávez's alleged role in Castillo's plan to dissolve congress.

Castillo was arrested in December 2022 on charges of rebellion, after he attempted to dissolve congress and install an emergency government.

Hours after the attempt, Castillo was impeached. He has been in preventative custody ever since.

Prosecutors are seeking a 34-year jail term for Castillo, who previously said he never took up arms against the state because the military refused his orders.

Peru's decision to sever diplomatic ties with Mexico adds to ongoing tensions between the two governments since Castillo's ousting.

In 2022, Lima expelled Mexico's ambassador following its decision to grant asylum to Castillo's wife and children following his arrest.

A year later, Peru also recalled its ambassador to Mexico after then-president Andrés Manuel López Obrador expressed his support for Castillo, saying he had been "illegally ousted".

A former primary school teacher, farmer and union activist, Castillo was dubbed Peru's "first poor president".

With no previous political experience, he took office as a government outsider, vowing to transform Peru's deteriorating economy and support the poor.

But Castillo's presidency came to an infamous end after his attempt to seize power was declared unconstitutional, with government officials and the country's armed forces refusing to support him.

Casillo's successor, former president Dina Boluarte, was removed from office last month by an overwhelming majority in Peru's congress, after mass protests against political scandals and soaring crime.

Congress leader José Jeri was then sworn in as interim president. — BBC