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 told Austria on Friday it will suspend gas deliveries via Ukraine on Saturday, in a development that signals a fast-approaching end of Moscow's last gas flows to Europe. Russia's oldest gas-export route to Europe,