Earlier in the day, military units led by General Juan Jose Zuniga, recently stripped of his military command, had gathered in the central Plaza Murillo square, home to the presidential palace and Congress.
A Reuters witness saw an armoured vehicle ram a door of the presidential palace and soldiers rush in.
Soldiers gathered outside the Bolivian presidential palace in Plaza Murillo in La Paz. (AP PHOTO)
"Today the country is facing an attempted coup d'état. Today the country faces once again interests so that democracy in Bolivia is cut short," he said in comments from the presidential palace, with armed soldiers outside.
"The Bolivian people are summoned today. We need the Bolivian people to organise and mobilise against the coup d'état in favour of democracy."
A few hours later, a Reuters witness saw soldiers withdraw from the square and police take control of the plaza.
Inside the presidential palace, Arce swore in José Wilson Sánchez as the military commander, Zuniga's former role. Sanchez called on the soldiers to return to their barracks and for their leaders to avoid bloodshed.
The United States said it was closely monitoring the situation and urged calm and restraint.
Denunciamos movilizaciones irregulares de algunas unidades del Ejército Boliviano. La democracia debe respetarse.— Luis Alberto Arce Catacora (Lucho Arce) (@LuchoXBolivia) June 26, 2024
Tensions have been building in Bolivia ahead of general elections in 2025, with leftist ex-President Evo Morales planning to run against former ally Arce, creating a major rift in the ruling socialist party and wider political uncertainty.
Many do not want a return of Morales, who governed from 2006-2019 when he was ousted amid widespread protests and replaced by an interim conservative government. Arce then won election in 2020.
Zuniga said recently Morales should not be able to return as president and threatened to block him if he attempted to, which led Arce to remove Zuniga from his post.
Ahead of the attack on the presidential palace, Zuniga had addressed reporters in the square and cited growing anger in the landlocked country, which has been battling an economic slump with depleted central bank reserves and pressure on the boliviano currency as gas exports have dried up.
"The three chiefs of the armed forces have come to express our dismay," Zuniga told a local TV station, calling for a new cabinet of ministers. He stopped short of calling for the removal of Arce.
"Stop destroying, stop impoverishing our country, stop humiliating our army," he said in full uniform, flanked by soldiers, insisting the action being taken was supported by the public.
Morales, head of the ruling MAS socialist party, said that his supporters would mobilise in support of democracy.
Former president Evo Morales says his supporters will not allow "armed forces to violate democracy". (AP PHOTO)
He accused Zuniga of seeking to stage a coup and announced a general work stoppage and a call to block roadways.
"We will not allow the armed forces to violate democracy and intimidate people," Morales said.
Public support for Arce and Bolivia's democracy has poured in from regional leaders, while even conservative political opponents in Bolivia including jailed ex-President Jeanine Anez have strongly condemned the military action.
"We express the strongest condemnation of the attempted coup d'état in Bolivia. Our total support and support for President Luis Alberto Arce Catacora," Mexican President Andres Manuel Lopez Obrador said on X.
