Samsung CEO Jay Y. Lee is expected to go on trial on Tuesday, accused of illegally using a restricted substance, as his legal difficulties continue to hound him even after his release on parole in August following a bribery conviction.

Market observers had expected a flurry of key decisions from Samsung Electronics Co Ltd (005930.KS) and its affiliates following Lee's announcement, including the location of a $17 billion semiconductor facility planned in the United States.