Georgia’s president called for protests in Tbilisi on Monday evening after the ruling party declared victory in a parliamentary election marred by reports of voting violations that Western countries said must be fully investigated.

The results of Saturday’s election are a blow for pro-Western Georgians who had cast the vote as a choice between a ruling party that has deepened ties with Russia and an opposition aiming to fast-track integration with Europe.

The ruling Georgian Dream party clinched nearly 54% of the vote, according to the country’s election commission.

However, monitors from the Organisation for Security and Co-operation in Europe (OSCE) said they had registered incidents of vote-buying, voter intimidation, and ballot-stuffing that could have affected the outcome. But they stopped short of saying the election was rigged.

President Salome Zourabichvili, a former ally of Georgian Dream who has become its leading critic, urged people to take to the streets to protest against the results of the ballot.

In an address on Sunday, Zourabichvili - whose powers are mainly ceremonial - referred to the result as a “Russian special operation”. She did not clarify what she meant by the term.

Zourabichvili urged Georgians to protest in the centre of the capital on Monday evening to show the world “that we do not recognise these elections”.

Russia angrily denied charges of election interference.

“We strongly reject such accusations - as you know, they have become standard for many countries. At the slightest thing, they immediately accuse Russia of interference... There was no interference and the accusations are absolutely unfounded,” Kremlin spokesman Dmitry Peskov said on Monday.

Peskov described the election result as “the choice of the Georgian people” and said it was the West, not Russia, that was trying to destabilise the situation.

‘Constitutional order’ challenged

Georgian Prime Minister Irakli Kobakhidze accused the opposition on Monday of attempting to “shake the constitutional order” of the country, local media reported. He also said his government remained committed to European integration.

But among the strongest responses in Europe to the events in Tbilisi, Italian Foreign Minister Antonio Tajani said Georgian opposition parties were “absolutely right” to dispute the election results, and he too pointed a finger at Moscow.

“We all know what Russian interference systems are,” he told Italian daily Il Messaggero in an interview published on Monday.

NATO added its voice on Monday to the calls for a full probe of what it called the “uneven playing field” in Georgia’s election, echoing an earlier demand from U.S. Secretary of State Antony Blinken.

“... we encourage Georgia’s political leaders to respect the rule of law, repeal legislation that undermines fundamental freedoms, and address deficiencies in the electoral process together,” Blinken said in his statement.

Shares in London-listed Georgian banks fell on Monday, with TBC Bank (TBCG.L), opens new tab down 9.8% and Bank of Georgia (BGEO.L), opens new tab down 7.3%, amid concerns of possible political instability.

The European Union also urged Georgia to swiftly and transparently investigate alleged irregularities in the vote.

“The EU recalls that any legislation that undermines the fundamental rights and freedoms of Georgian citizens and runs counter to the values and principles upon which the EU is founded, must be repealed,” the European Commission said in a joint statement with EU foreign policy chief Josep Borrell.

For years, Georgia was one of the most pro-Western countries to emerge from the Soviet Union, with polls showing many Georgians disliking Russia for its support of two breakaway regions of their country.

Russia defeated Georgia in their brief war over the rebel province of South Ossetia in 2008.

The election result poses a challenge to the EU’s ambition to expand by bringing in more former Soviet states.

Moldova earlier this month narrowly approved adding a clause to the constitution defining EU accession as a goal. Moldovan officials said Russia meddled in the election, a claim denied by Moscow.