One man was killed and ten more were injured in an explosion at a compressor plant in Russia's Yamal peninsula in north-western Siberia, Itar-Tass quoted a spokesman for the local emergencies administration as saying. The accident occurred during tests at the Bailaratskaya compressor plant at about 11:05 a.m. Moscow time on Tuesday. Previously, the spokesman said the plant was not hooked up to the gas mains, so no fire followed the blast.