The interior ministry said those involved in the plot had received money from Russia which has criticised NATO military exercises in Georgia due to begin on Wednesday (6 May).
"The main aim of this uprising was to disrupt the NATO military exercises," Defence Minister David Sikharulidze told Reuters. "We are in negotiations with the soldiers at the Mukhrovani base and I hope this uprising will end soon."
Sikharulidze said the commanders of the military base 19 km from the capital Tbilisi had been dismissed and the soldiers confined to barracks.
The interior ministry said one person had been arrested. "They [the plotters] were receiving money from Russia," ministry spokesman Shota Utiashvili told a news conference. "It seems it was coordinated with Russia."
ITAR-Tass news agency quoted an unnamed Russian security source as rejecting suggestions that Moscow was behind the Georgian coup. "This is a nightmare and an agony for the Saakashvili regime," he said. "One cannot describe this in a different way."
NATO declines to comment
NATO declined to comment on the news out of Georgia.
NATO's military exercises this week are a gesture of solidarity condemned by Russia as "muscle-flexing".
Around 1,000 soldiers from over a dozen NATO member states and partners will practice "crisis response" at a Georgian army base east of Tbilisi, around 70 km from the nearest Russian troop positions in breakaway South Ossetia.
The month-long exercises at a former Russian air force base in Vaziani are seen as a signal from the 28-member alliance that, despite doubts over the promise of eventual membership, Georgia has not been forgotten.
Russian President Dmitry Medvedev said the decision to go ahead with the exercises was wrong and dangerous.
"I want to specifically stress that responsibility for possible negative consequences of these decisions will fully rest on the shoulders of those who made them and carry them out," he said on 1 May.
NATO and Russia last week resumed formal contact, which has been suspended over the war when the West accused Moscow of a "disproportionate" response to Georgia's assault on separatists in South Ossetia.
But the exercises, coupled with the expulsion last week of two Russian diplomats from NATO over a spying scandal and a Russian decision to take control of South Ossetia's borders, had put the relationship under renewed pressure.
The next round of talks between Russia and Georgia on South Ossetia, shepherded by the Organisation for Security and Cooperation in Europe (OSCE), European Union and United Nations, is due to be held in Geneva from 18-19 May.
(EurActiv with Reuters.)
