LOS ANGELES, May 12 (UPI) -- A U.S. grand jury in Los Angeles has indicted a museum director from Thailand on charges related to an alleged tax scam involving donated Asian antiquities.

Roxanna Brown, 62, is the director of the Southeast Asian Ceramics Museum at Bangkok University was charged with allowing two Los Angeles art dealers to use her electronic signature on appraisal forms that accompanied donations made to U.S. museums.

The U.S. Attorney's office said in a written statement that the appraisal values were well above their actual value, which allowed the donors to take a larger tax deduction for their donations.

Brown was arrested Friday in Seattle.

The case against Brown was developed during an ongoing investigation into the alleged importation of plundered antiquities from Southeast Asia.