An employee of Ukrtransgaz is seen at the gas pumping station at Ukrainian settlement of Orlovka, about 280 km (174 miles) west of the Black Sea port of Odessa in this file picture.

Moscow - The parliament of Ukraine's Crimea voted on Monday to nationalise energy companies Chornomornaftohaz and Ukrtransgaz, according to a statement on the parliament's website.

Last week, a Crimean official said that the local authorities may sell the energy firm Chornomornaftohaz to a Russian company “such as Gazprom” once the region takes control of it.

A Moscow-backed referendum in Crimea on Sunday showed overwhelming support for joining the Russian Federation. - Reuters