I wonder if this guy was scammed into making some kind of large cash purchase of real estate by the group with the intent of robbing him?:
Six foreigners are on the run after stealing a bag of cash from Seoul Station earlier this month.
The bandits, from countries including Mexico and Colombia, stole 360 million won ($316,000) from a Korean man at a fast food restaurant at the train station in Jung-gu, on Aug. 2, according to Seoul Namdaemun Police on Monday.
Three men and three women were involved, of whom at least some had left Korea, police said.
They said the gang had waited for the victim at the station and followed him into the restaurant.
The man left his bag on a table and went to place an order with the cashier while a person with him kept an eye on the bag.
But gang members distracted him by dropping money on the floor. The others snatched the bag and fled. [Korea Times]
You can read more at the link.