"We have launched an investigation into an attempt to commit an act of terror and an attempt to hijack a plane," Ukrainian Security Service (SBU) investigative department chief Maxim Lenko told reporters.
Lenko said the Ukrainian -- who one official in Kiev said was "in an advanced state of drunkenness" during the incident -- had a personal dislike for the politics of President Viktor Yanukovych and his Russian counterpart and ally Vladimir Putin.
The meeting on the sidelines of the Games' opening ceremony focused on a prolonged political crisis in Ukraine that has pitted the interests of Russia against those of the West.
The Ukrainian man -- said officials said was born in 1969 -- brandished what he said was a detonator as he tried gaining access to the cockpit of an aircraft operated by Turkey's Pegasus Airlines on flight from the eastern Ukrainian city of Kharkiv with 110 people on board.