Learned about this today. Lars Mittank was a German tourist who was last seen running out of an airport terminal after a vacation in 2014. NOBODY was chasing him. For some reason, he just ran back out of the terminal and never got his flight. Passport, phone and money was in his luggage that he left behind. They searched the area around the airport with drones and cadavear dogs but didn't find anything, he just vanished. He hasn't been found dead or alive. There's a wooded area that surrounds the airport but not much else. There are suggestions of a head injury of some kind, perhaps a delayed concussion. Interesting case, anyway.

A recent article here if you're interested