Secretary-General Ban Ki-moon is ordering an audit of two foundations whose leaders are linked to an alleged bribery case involving former U.N. General Assembly president John Ashe.

One foundation donated over $1.5 million to a U.N. body.

U.N. spokesman Stephane Dujarric announced the audit of the Sun Kian IP Group Foundation headed by Macau billionaire Ng Lap Seng and the Global Sustainability Foundation whose Chinese-born CEO Sheri Yan served as adviser to Ashe.

A U.S. prosecutor charged Tuesday that Ashe accepted over $1 million in bribes from Ng and other businesspeople including Yan to pave the way for lucrative investments.

Dujarric said "the secretary-general reaffirms that there will be no tolerance for any corruption at the United Nations or in the name of the United Nations."