The U.S. government is seeking to recover more than $1 billion in assets tied to international public corruption and a global money laundering conspiracy in what Department of Justice officials describe as the largest single action ever brought under the Kleptocracy Asset Recovery Initiative.

At a press conference today, Attorney General Loretta E. Lynch announced civil forfeiture complaints to recover assets associated with a fund owned by the Malaysian government that raised nearly $8 billion to benefit the Malaysian people. Instead, much of the money was diverted by high-ranking fund officials and their associates to purchase yachts, hotels, a $35 million jet, artwork by Vincent Van Gogh and Claude Monet, and to bankroll the popular 2013 film The Wolf of Wall Street.

“This fraud went on around the world,” said Special Agent Darryl Wegner, chief of the FBI’s International Corruption Unit, which investigated the case along with the Internal Revenue Service’s Criminal Investigative Division. “At least $1 billion traceable to the conspiracy was laundered through the United States and used to purchase assets here.”

From 2009 through 2015, according to the complaints, more than $3.5 billion in funds belonging to 1Malaysia Development Berhad (1MDB) was allegedly misappropriated.

The fund was created by the Malaysian government to promote economic development in that country through global partnerships and foreign direct investment. But members of the conspiracy—which included 1MDB officials, their relatives, and other associates—diverted billions of dollars using a web of shell companies with bank accounts in Singapore, Switzerland, Luxembourg, and the U.S. These complex schemes were intended to conceal the origin and ownership of the funds.