Pro-Russian separatists raised the Russian flag on Ukrainian army armored vehicles in eastern Ukraine on Wednesday, mocking the pro-Western Kyiv government's attempt to reassert control on the eve of crucial talks in Geneva on the country's future.
A Ukrainian defense ministry statement confirmed that six armored personnel carriers were seized with the help of Russian agents, Reuters reported.
The defense ministry statement said the troop carriers are now in Slovyansk, guarded by "people in uniforms who have no relation to Ukraine's armed forces."
Meanwhile, Ukraine's counter-intelligence chief said he has evidence of Russia's involvement in eastern provinces. According to Reuters, Vitaly Nayda told a news conference Wednesday that the determination was made after intercepting conversations of the Russian military from Sloviansk. The official said 40 agents 'recruited by Russian security services' had been arrested. Nayada added that those arrested had admitted to being recruited and were now assisting with the investigation.
Amid escalating rhetoric between Moscow and Kyiv, the incident in Slovyansk highlighted defiance by pro-Russian separatists, undermining the central government efforts to push armed rebels out of captured buildings in 10 eastern towns without bloodshed.
Government troops had driven armored personnel carriers flying the Ukrainian flag into the town of Kramatorsk in the early morning after securing control of a nearby airfield from the rebels on Tuesday, prompting Russian President Vladimir Putin to warn of the risk of civil war.
As the armored vehicles drove into Slovyansk waving Wednesday, some people waved back and shouted: "Well done lads!" and "Russia, Russia!"
A soldier guarding one of the carriers now under the control of the rebels told Reuters he was a member of Ukraine's 25th paratrooper division from Dnipropetrovsk.
"All the soldiers and the officers are here. We are all boys who won't shoot our own people," he said, adding that his men had no food for four days until local residents fed them.
A spokesman for the separatists and a witness in Kramatorsk said the Ukrainian troops had given up their vehicles to the rebels after talks.
Overhead, a Ukrainian jet fighter carried out several minutes of aerobatics above the town's main square in a show of strength by Kyiv's forces.
The muscle-flexing and inflamed rhetoric heightened fears of violence.
The Kyiv government is seeking to reassert control slowly and without bloodshed before Thursday's Geneva meeting at which the Russian and Ukrainian foreign ministers are due to meet for the first time in the presence of the United States and the European Union.
Russia, which has refused to recognize Ukraine's pro-Western government since Moscow-backed President Viktor Yanukovych was ousted by mass protests in February, sought to dramatize instability in its neighbor ahead of those talks.