Ukraine denies Russian Crimea claim

A spokesman for Ukrainian defence intelligence has denied Russia's accusation that special forces had attempted an armed incursion into Crimean territory.

"This is fake information," a spokesman told Reuters.

Russia's Federal Security Service (FSB) said it had thwarted Ukraine's planned incursion that was supposed to target critical infrastructure.

The FSB said that a Russian soldier and an FSB employee had been killed in the clashes.

The FSB said the attempted incursions had taken place over the weekend.