Ban Ki-sang: United States asks South Korea to arrest former UN chief Ban Ki-moon's brother

The US Government has asked South Korea to arrest a brother of former UN Secretary-General Ban Ki-moon on charges that he engaged in a bribery scheme to carry out the sale of a Vietnamese building complex.

Ban Ki-moon's (pictured) brother has been charged in the US.

Ban Ki-moon's (pictured) brother has been charged in the US.

During a court hearing in federal court in Manhattan, Assistant US Attorney Daniel Noble said a request had been made for the arrest of Ban Ki-sang, who was an executive at South Korean construction firm Keangnam Enterprises.

Mr Noble said the United States plans to seek his extradition, "but as of yet, he has not been apprehended."

Ban Ki-sang, who could not be reached for comment, was one of four people charged on January 10 in a case that has complicated his brother's expected run for president of South Korea following his recently-finished term at the UN.

The case has already resulted in the arrest of another of his relatives, Joo Hyun "Dennis" Bahn, a real estate broker living in New Jersey — he is Ban Ki-sang's son.

Ban Ki-moon issued an apology saying he hoped any cooperation between authorities in South Korea and the United States would be "strict and transparent".

"I have absolutely no knowledge of this case," Mr Ban said in a statement, adding he hoped authorities were able to clear up all suspicion among the South Korean public.

According to an indictment, amid a liquidity crisis at Keangnam, Ban Ki-sang arranged for it to hire his son to broker a refinancing on the Landmark 72 building complex in Hanoi, which cost more than $US1 billion ($1.3 billion) to construct.

Men accused of securing deals through 'connections'

The indictment said that in March 2013, Bahn through an acquaintance met Malcolm Harris, a self-described arts and fashion consultant and blogger who has also been charged in the case.

Prosecutors said Harris told Bahn he could help get a deal through his connections, which he said included members of a Middle Eastern royal family, and offered to arrange the Landmark 72's sale to a sovereign wealth fund by bribing an official.

In April 2014, Bahn and Ban Ki-sang agreed to pay an upfront $660,000 bribe and another $2.6 million upon the sale's closing to the official, prosecutors said.

However, prosecutors said Harris did not have any connection to the official, and after the men sent $660,000 to his company — Muse Creative Consulting LLC — to pay bribes as a middle man, he stole the funds.

He spent the money on airfares, hotels, lavish meals, furniture, rent for a Manhattan apartment and a six-month lease for a penthouse in the fashionable Brooklyn neighbourhood of Williamsburg, the indictment said.

Both Bahn, 38, and Harris, 52, have pleaded not guilty.