A nephew of former U.N. Secretary General Ban Ki-moon pleaded guilty to criminal charges Friday in a bribery case over the $800 million sale of a building complex in Vietnam.

Joo Hyun Bahn, also known as “Dennis Bahn,” pleaded guilty to conspiracy and violating the Foreign Corrupt Practices Act in Manhattan federal court as part of a deal struck with prosecutors.

He has been free on bail for a year since he was charged with trying to pay $2.5 million in bribes to rescue the failed real estate deal for Landmark 72, a Vietnam building complex that included a 72-story commercial building that was then the tallest building in the Indochina Peninsula.

During his plea, the 39-year-old Bahn said he facilitated a bribe and knew what he was doing “was a bad act.”

U.S. District Judge Edgardo Ramos of the Southern District of New York set sentencing for June 29.

The charges carry a potential sentence of up to 10 years. The plea agreement Bahn signed with prosecutors said his federal sentencing guidelines range could be as little as three years or as many as seven years in prison. The judge, though, is free to deviate from the calculated range.

Prosecutors said the scheme occurred from March 2013 to May 2015 when Bahn and his father, Ban Ki Sang, conspired to try to induce a foreign official to persuade a sovereign wealth fund to rescue the real estate deal. The father was charged in the case but has not been arrested.
An indictment said a $500,000 bribe was paid to a local businessman to arrange a $2 million bribe of the foreign official. But the government said in court papers that the half million dollars was instead wasted by the businessman on lavish expenses, perhaps because he didn't have the connections he boasted about.