Authorities in Georgia have arrested ex-president Mikheil Saakashvili upon his return from exile, raising the stakes on the eve of elections seen as a key test for the increasingly unpopular ruling party.
Mr Saakashvili, a flamboyant pro-Western reformer who left the Caucasus country after his second term as president ended in 2013, announced his return in video messages today, a day before closely watched local elections.
His opponents in the ruling Georgian Dream party had warned Mr Saakashvili would be arrested on a 2018 abuse of office conviction if he returned, and Prime Minister Irakli Garibashvili said he had quickly been detained.
"Georgia's third president Mikheil Saakashvili has been arrested today and sent to jail," Mr Garibashvili told a news conference in the capital Tbilisi.
Georgia's rights ombudsperson, Nino Lomjaria, who visited him in prison, told journalists that Mr Saakashvili went on hunger strike.
Georgian media reported Mr Saakashvili was in a prison in the town of Rustavi about 30km from Tbilisi.
The interior ministry released a video showing a smiling and handcuffed Mr Saakashvili being taken from a police vehicle and escorted by two officers believed to be inside Rustavi prison.
Georgian President Salome Zurabishvili - Mr Saakashvili's longtime foe - said in a statement she "will never pardon" Saakashvili.
Ukraine's President Volodymyr Zelensky expressed concerns over the detention of Mr Saakashvili, who in exile became a Ukrainian national and the chairman of his government's agency steering reforms.
"Ukraine appeals to the Georgian side to clarify all the circumstances and reasons for such a step against a Ukrainian citizen," Mr Zelensky's spokesman, Sergii Nykyforov, said on Facebook.
The arrest of Georgia's 53-year-old foremost opposition leader - albeit stripped of his original nationality - will almost certainly spark upheaval in the small ex-Soviet nation that has been plagued for years by political instability.
Closely watched vote
In a video posted on social media this evening, Mr Saakashvili said he was in Tbilisi and believed he was about to be detained, calling on supporters of his United National Movement party (UNM) to mobilise for tomorrow's elections.
"Go to the polls, vote and on (Sunday) we will all together celebrate our victory," he said. "I am not afraid of anything and you also should not be afraid."
In an earlier video message, Mr Saakashvili said he was in the western city of Batumi and had risked his "life and freedom" to return to Georgia from Ukraine.
The municipal elections are being watched both inside and outside Georgia for signs of the Georgian Dream government's backsliding on democracy.
Mr Saakashvili - who swept to power in 2004 following a peaceful uprising and still commands a fiercely loyal following - called in one video today for his supporters to gather on the main thoroughfare in the capital Tbilisi on Sunday.
"If the usurper government manages to detain me prior to this, it must only strengthen us," he said addressing supporters of the UNM, Georgia's main opposition force.
Mr Saakashvili was convicted in absentia on the abuse of office charges in 2018 and sentenced to six years in prison. He denies any wrongdoing and says the case is politically motivated.
Founded by powerful billionaire Bidzina Ivanishvili, Georgian Dream has been the ruling party since 2012.
Critics have accused the party of using criminal prosecutions to punish political opponents and journalists.
Interpol turned down requests from Tbilisi to issue a red notice against Mr Saakashvili.
Georgian Dream narrowly won parliamentary elections last year but the opposition, led by Saakashvili's UNM, denounced the vote as rigged and refused to take up their seats.
The European Union mediated an agreement to end the crisis, under which Georgian Dream pledged to hold a snap parliamentary vote if it wins less than 43% in tomorrow's local elections.
The ruling party unilaterally withdrew from the agreement in July, sparking harsh criticism from the European Union and the United States.
Mr Saakashvili has insisted the EU-brokered deal remained in force, saying the upcoming elections "are a referendum on Ivanishvili's removal from power".
Mr Ivanishvili - Georgia's richest man and a former prime minister - is widely believed to be calling the shots in Georgia but insists he is no longer a political player.
With concerns mounting in the West over the ruling party's democratic credentials, the United States has hinted at possible sanctions against Georgian Dream officials.