The report, aired on "20/20," not only revealed instances of illicit sex trade, but also detailed examples of children supposedly fathered by U.N. personnel, then abandoned, Internet pornography by U.N. administrators, and numerous occurrences of blatant rape by U.N. military and civilian personnel.

When first confronted by ABC chief investigative correspondent Brian Ross in the Congolese capital, Kinshasa, Swing insisted that the "problem" was "being addressed." When Ross produced undercover video to the contrary, Swing announced that he "would look into the matter."

NewsMax learned shortly after the Ross report that the Security Council had "requested" a written response to the allegations from Swing, with a possible face-to-face meeting behind closed doors at U.N. headquarters.

Now it appears that Swing will bow to pressure and submit his resignation during a private meeting with Annan in his NYC office on Thursday.

The Swing resignation comes on the heels of the departure of Ruud Lubbers, the former Dutch prime minister who was the U.N.'s High Commissioner for Refugees.

The UNHCR chief, who resigned two weeks ago, blasted Annan for forcing him out.

Lubbers had come under fire during the past year from several UNHCR staffers who had complained of sexual harassment.

The U.N.'s chief internal investigator, Dilip Nair, has also come under repeated claims of sexual harassment.

His deparment, OIOS, Office of Internal Oversight Services, is the U.N.'s main investigative unit, encharged with uncovering internal abusses.

U.N. sources tell NewsMax that Annan is also considering asking for Nair's resignation.

Editor's note: