By Vladimir Soldatkin and Guy Faulconbridge MOSCOW (Reuters) -Russian gas giant Gazprom continued to pump steady volumes of gas to Europe via Ukraine on Saturday, but supplies to Austrian energy company OMV were halted hours after Vienna said Russia had given notice it would cut off flows.

Russia's Gazprom Export announced that its supply of natural gas to Austria is ending on Nov. 16, according to OMV, Austria's largest gas supply company.

Russia's state-owned natural gas company Gazprom halted supplies to Austria early Saturday, according to the Vienna-based utility OMV, after OMV