Man uses Samurai sword to kill his former wife and new boyfriend before setting their home on fire

Sword illustration 
By: Wayne Morin 

A man was arrested on charges of murder after killing 5 people using a Samurai sword before setting a home on fire, prosecutors in California said.

Now, the 45-year-old Palmdale man pleaded guilty to killing his former wife and four others before setting a Quartz Hill home on fire during a bloody rampage.

Jae Shim pleaded guilty to the first-degree murders of his former wife, Jenny Young Park, 34; her daughter, Jamie, 13; her son, Justin, 11; a relative, Joseph Ciganek, 60; and her boyfriend, Si Young Yoon, 34.

Shim also pleaded guilty to arson of an inhabited structure.

In addition, Shim admitted the special circumstances of lying in wait and multiple murders and that he personally used a Samurai sword and baseball bat to stab and beat the victims to death.

The plea before Superior Court Judge Larry Fidler was in exchange for prosecutors agreeing not to seek the death penalty against Shim if he agrees to testify completely and truthfully against co-defendant Steve Kwon.

As part of his plea, Shim provided information that led authorities to the remains of Si Young Yoon, who had been missing.

His remains were discovered in Mexico. Shim is facing five consecutive life without the possibility of parole terms.

Kwon, 44, is awaiting trial on five counts of capital murder, one count of arson of an inhabited structure and one count of accessory after the fact.

If convicted, Kwon is facing life in prison without the possibility of parole.