Russia introduced a ban on diesel exports on Wednesday as part of a raft of measures to support the domestic fuel market after a campaign of Ukrainian drone attacks on oil refineries triggered shortages and price spikes in some regions.

Drivers in many regions are facing hours-long lines to refuel, as intensifying Ukrainian strikes on Russian energy infrastructure squeeze supplies of diesel and gasoline.

Deputy Prime Minister Alexander Novak told a televised government meeting that the fuel situation remained complex and that "it is clear that the current situation at filling stations is causing concern among the public."

"Today, a ban on diesel fuel exports was introduced, and this will make it possible to increase supplies to the domestic market," he said, adding that Russia would start importing fuel in July.

The government said the ban, which includes producers of the fuel, will be in place until July 31.