Department of Justice Logo 

U.S. Department of Justice

United States Attorney
Northern District of California

11th Floor, Federal Building
450 Golden Gate Avenue, Box 36055
San Francisco, California  94102

FOR IMMEDIATE RELEASE
 

Tel: (415) 436-7200
Fax: (415) 436-7234

August 30, 2002

The United States Attorney's Office for the Northern District of California announced that two defendants associated with Twin Technology, Inc., a San Jose corporation in the business of assembling printed circuit boards for computer manufacturers, were sentenced to prison terms Tuesday in U.S. District Court in San Jose on tax charges by the Honorable Jeremy Fogel, United States District Court  Judge.

Yong Ho Ko, a/k/a James Ko, 43, and Jungah Choi, a/k/a Joanne Choi, 36, both of San Jose, were indicted by a federal grand jury in a 17-count indictment on April 11, 2001.  Each pled guilty  May 14, 2002, to filing false federal income tax returns, in violation of Title 26 US Code Section 7206(1).  In his plea agreement, James Ko admitted to receiving $792,161.64 in 1994 and $456,979.75 in 1995 and intentionally failing to report this income on his individual federal income tax returns.  Ms. Choi admitted to receiving $150,223.65 in 1994 and $89,423.95 in 1995 and intentionally failing to report this income.

According to documents filed with the court, during 1994 and 1995, James Ko was the President of Twin Technology, Inc, a San Jose corporation which assembled printed circuit boards for computer manufacturers.  Jungah Choi was a company sales representative.  During those years, James Ko received a total of $1,186,981.89 from National Smelting and Refining Co., Inc. ("NSR") for DRAM chips.   Ms. Choi received a total $239,647.60 during the same period.  The defendants each failed to report this additional income on their federal income tax returns.    

Yong Ko was sentenced to 15 months imprisonment and ordered to pay restitution to the government in the amount of the $484,308.73.  Ms. Jungah Choi was sentenced to a term of 5 months imprisonment plus 5 months of home detention and ordered to pay restitution of $85,928.30.  Each defendant's term of imprisonment will be followed by 3 years of supervised release.

A third defendant charged in the indictment, Yong Uk Ko, a/k/a Paul Ko, is scheduled to appear for sentencing before Judge Fogel on October 22, 2002. 

The prosecution is the result of an approximately two-year  investigation by special  Agents of the Internal Revenue Service Criminal Investigation Division and Federal Bureau of Investigation.  Assistant United States Attorney David Callaway is prosecuting the case with the assistance of legal technician Tracey Anderson. 

A copy of this press release may also be found on the U.S. Attorney's Office website at www.usdoj.gov/usao/can.

All press inquiries to the U.S. Attorney's Office should be directed to Assistant U.S. Attorney Matthew J. Jacobs at (415) 436-7181 or Assistant U.S. Attorney Elizabeth De la Vega in San Jose at (408) 525-5032.

Matt Jacobs' signature