BERLIN/MILAN, Aug 21 (Reuters) - A Ukrainian man was arrested at a holiday bungalow in Italy on suspicion of coordinating attacks on three Nord Stream gas pipelines in 2022, officials said on Thursday, a breakthrough in an episode that sharpened tensions between Russia and the West.

German prosecutors say a Ukrainian man has been arrested in Italy on suspicion of blowing up the Nord Stream gas pipelines under the Baltic Sea, several months after the start of Russia's full-scale invasion of Ukraine in 2022.