(CNN) Actress Lori Loughlin and 15 other wealthy parents now face an additional charge of money laundering as part of the growing college admissions scandal.

conspiring to launder bribes and other payments through a charity run by Rick Singer, the mastermind of the scam, as well as by transferring money into the United States to promote the fraud, prosecutors said. The parents, who were charged last month with conspiracy to commit fraud, were charged on Tuesday in a superseding indictment withconspiring to launder bribes and other payments through a charity run by Rick Singer, the mastermind of the scam, as well as by transferring money into the United States to promote the fraud, prosecutors said.

Loughlin and her husband, fashion designer Mossimo Giannulli, are accused of paying $500,000 to Singer's fake charity to get their two daughters into the University of Southern California as crew recruits, even though the daughters did not participate in the sport.

The couple appeared last week in federal court in Boston, but they have not publicly indicated how they plan to plea.

In addition, Gamal Abdelaziz, Diane and Todd Blake, I-Hsin "Joey" Chen, Elizabeth and Manuel Henriquez, Douglas Hodge, Michelle Janavs, Elisabeth Kimmel, William McGlashan Jr., Marci Palatella, John Wilson, Homayoun Zadeh and Robert Zangrillo were also charged in the superseding indictment.

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