The Hungarian prime minister warned that "Europe is nearing an extremely serious energy crisis, and the coming days will be critical"

Viktor Orban said Budapest and Bratislava see it as necessary to urgently take steps to help EU countries avoid shortages of raw materials and fuel, as well as rising energy prices

The incident comes a week before the polls, and follow warnings of a potential operations staged to influence voters.

The Hungarian prime minister warned that "Europe is nearing an extremely serious energy crisis, and the coming days will be critical"