Georgian PM Irakli Garibashvili resigned on Wednesday, after two years of ruling the Georgian government, without a specific reason.
"I took the decision to leave my post," Garibashvili said in a televised address to the nation, without explaining the reason.
"All posts are temporary. Only God and the motherland are eternal," a stone-faced Garibashvili added.
The next parliamentary elections in Georgia will be held in fall 2016, with a little less than a year for voting, the electoral system is uncertain at the moment.
Garibashvili came to power in November 2013, following the resignation of Bidzina Ivanishvili.
He served as the interior minister after Ivanishvili’s Georgian Dream coalition beat former President Mikheil Saakashvili's party in the October 2012 election and took control of the parliament and government.
"The interior minister's position or prime minister's post was never an end in itself for me. It was always an opportunity to serve my country and our people," Garibashvili said.
"This reshuffle is linked to the upcoming parliamentary election. Members of the Georgian Dream coalition have seen a decline in their popularity rating and it would be difficult to start a pre-election marathon with the same premier," an opposition politician Mamuka Katsitadze said.
It has not yet been determined on who will take over Garibashvili’s position.
Foreign Minister Georgy Kvirikashvili is among the candidates.