Peru's vice-president has resigned from her post after declining the opposition's nomination to be interim leader, saying she hoped it would pave the way for a new general election. Mercedes Aráoz said the “constitutional order had broken” and that the country faced a “grave institutional crisis”.
President Martín Vizcarra on Monday dissolved Congress, but opposition MPs suspended him and swore in Ms Aráoz. On Tuesday, armed police blocked legislators from entering Congress.
Some 20 MPs were inside the congressional building in the capital, Lima, refusing to leave in protest against President Vizcarra's dissolution, while streets around parliament were in lockdown.
In a late-night post on Twitter, Ms Araoz cited a statement by the Organization of American States that Peru's constitutional court should determine the legality of Mr Vizcarra's decision to dissolve Congress.
She said she hoped that her resignation would lead to a general elections being called as soon as possible, for the good of the country.
On Monday Martin Vizcarra dissolved Congress, saying opposition legislators had blocked him from passing a raft of anti-corruption measures. He argued that his move was constitutional, but opposition parliamentarians said it was dictatorial and have refused to leave the building.
A majority of the opposition-controlled Congress then voted in favor of suspending Mr Vizcarra for a year, and declared Ms Aráoz acting president. But the government claimed the moves were null and void because they had occurred after Congress had been dissolved.
The stand-off is likely to continue over the coming days, with Congress planning to meet again on Friday to vote on a motion to dismiss the president altogether.
Vizcarra - who seems to have the support of the armed forces and the police, and most governors, has issued a decree setting parliamentary elections for 26 January. Meanwhile, a legal battle is expected to kick off to determine if the dissolution of Congress was constitutional or not.
Mr Vizcarra was sworn in in March 2018 after his running mate and then-President Pedro Pablo Kuczynski resigned over a vote buying scandal. He said he would fight corruption head-on, which endeared him to Peruvians tired of endless scandals that have tainted not only Mr Kuczynski but also the three previous presidents.
Mr Vizcarra says Congress, dominated by the right-wing Popular Force party led by Keiko Fujimori, blocked his measures, and accused the party of trying to shield itself from corruption investigations by obstructing the reforms.
Ms Fujimori, the daughter of former President Alberto Fujimori, is in jail awaiting trial for allegedly accepting illegal funds from Odebrecht.
The president also argued that Congress's appointment of a new judge to the constitutional court would interfere with his efforts to stamp out corruption. Among other things, the court is soon due to decide whether to free Keiko Fujimori from pre-trial detention.