The European Union is set to probe Formula One owner Liberty Media's 3.5 billion euro ($3.67 billion) deal for the motorcycle racing league MotoGP World Championship, Bloomberg News reported on Thursday, citing people familiar with the matter. The new EU antitrust chief Teresa Ribera's team is worried that the merger could stifle competition in broadcasting and streaming sectors by bringing two major motorsports brands under a single umbrella, the report said. Liberty Media did not immediately