The wife of Mexican drug kingpin Joaquin “El Chapo” Guzman pleaded guilty Thursday to charges in the U.S. and admitted that she helped her husband run his multibillion-dollar criminal empire.

Emma Coronel Aispuro, wearing a green jail uniform, appeared in federal court in Washington and pleaded guilty to three federal offenses as part of a plea deal with federal prosecutors.

The charges include knowingly and willfully conspiring to distribute heroin, cocaine, marijuana and methamphetamine for several years. She also pleaded guilty to a money-laundering conspiracy charge and to engaging in transactions with a foreign narcotics trafficker.

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The 31-year-old was arrested in February at Dulles International Airport in Virginia and has been jailed since then.

Read more at USA Today.