A leading politician in Ukraine has accused the country's richest man of inciting public unrest to ensure the government steers clear of reforms that would hurt his businesses.

Mustafa Nayyem, a respected former reporter, published documents Friday claiming to prove that protest marches this week by miners were organized by an energy company owned by billionaire Rinat Akhmetov.

Hundreds of miners have gathered outside government buildings in the capital over recent days in calls for the resignation of the energy minister and for guarantees on a moratorium on mine closures.

Akhmetov's DTEK holding company controls much of Ukraine's coal industry. The government has recently adopted measures to eliminate subsidies for loss-making parts of the coal sector.

DTEK did not respond to emailed requests for comment.