The mayor of the California city of Arcadia has agreed to plead guilty to acting as an illegal agent of China, the U.S. Department of Justice said.

Eileen Wang has resigned as Arcadia mayor and is expected to plead guilty in the federal court in Los Angeles in the coming weeks.

Ms. Wang, 58, along with her then-fiance Yaoning ‘Mike’ Sun have been charged with promoting pro-China propaganda in the U.S. at the behest of the Chinese government officials, federal prosecutors announced on Monday.

The 65-year-old Sun is serving a four-year jail term after he pleaded guilty in a federal court in October last year.

In a related filing, Ms. Wang has agreed to plead guilty to the felony count, which comes with a maximum penalty of 10 years in prison.