Answer
Roman Protasevich's flight was diverted to Minsk due to a false bomb threat passed on by Belarusian air traffic control. This was done in order to capture Protasevich, who was a critic of the Belarusian government. Protasevich was arrested after the plane landed in Minsk and is currently being held in prison. The false bomb threat was a clear example of the Belarusian government's efforts to silence dissent.