Nothing was organized about this crime..But wiretapping now I believe with this the intruder would ask for more money cause where we going here isn't cheap.....Now if the ransom note is real...How would this be divided between the kidnappers...Now remember we have members,cost for everything,wiretapping equipment and a get away car.....
Here's an example of an IDI profile:
http://www.trutv.com/library/crime/serial_killers/weird/yoo_young_cheol/1.html
Yoo Young-cheol was a changed man when he was released from the Jeonju Detention Center. The prison experience was nothing new, since he spent most of his adult life in the South Korean correctional system. He entered prison as a married man and left as a single man. His wife divorced him in May of 2002. That was one factor that is attributed to shifting his criminal mindset.
While serving time for robbery and rape, Yoo
studied the life and crimes of Jeong Du-young, another serial killer who murdered nine
wealthy victims in Busan, Ulsan and other cities in the Gyeongnam Province from June 1999 to April 2000. The murders committed by Jeong were simply
part of his daytime robberies. At the time of his capture, he was quoted as saying he had an urge to rob houses that were equipped with security cameras. He later said, "I may have the devil inside me."
He targeted wealthy residences, and if a person was home, they would be stabbed to death. There would be no witnesses.
During his spree of robberies and murders, Jeong
held a woman for ransom, robbed thirteen homes, and killed nine people.
Police investigations of the serial killings of Yoo Young-cheol would later reveal that he was a methodical man. His forethought was extraordinary and his attention to detail was superb.
The physical act of bludgeoning a human was no exception.
While ransom would seem to be a primary factor, here it was only a small part of the criminality.