A Russian employee in the Swedish branch of Canadian plane and train maker Bombardier has been acquitted of aggravated bribery.
The trial was one of Sweden's biggest corruption cases to date.
The Stockholm District Court said "it could not be proven" that Evgeny Pavlov, an employee of Bombardier Transportation Sweden AB, "has promised or offered an unfair advantage, which is a prerequisite for the existence of a bribe".
Mr Pavlov had been accused of bribery to win a contract for a signalling system with a contract value of around 340 million US dollars.
He had been facing a six-year jail sentence and deportation until his acquittal.
In 2013, Bombardier was part of a consortium awarded a 288 million US dollar contract to supply signalling equipment for a 300-mile track along a corridor connecting Asia and Europe to Azerbaijan Railways.