
After a very organised group of terrorists hijacked the Kuwait Airways jumbo jet Flight 422 from Bangkok to Kuwait City for 16 days and killed two of their hostages in April of 1988, there was an investigation.
Fair enough at this remove from the event to say that the investigation was also very organised. It included very thorough people from three-letter agencies from more than a dozen countries -- Thailand included -- who never trumpet their successes and in fact hold them secret.
The group got pretty well all the answers they sought about the hijacking -- who, from where, why and most especially how? The hijackers were Lebanese, all members of the Shia-aligned and Iran-backed Hezbollah, or Army of God. It was and is an Islamist group particularly adept at terrorism and often acting abroad as Tehran's special operations group commandos. Hezbollah has operated belligerently within Thailand on terrorist missions before and since the 1988 hijacking.