The U.N. rights official who admitted not following up for months on allegations of child sexual abuse by French soldiers in Central African Republic has resigned.

The U.N. confirmed Wednesday that Flavia Pansieri has left the post of deputy high commissioner for human rights "for health reasons." No more details were given.

The allegations by children as young as 9 of trading oral sex and sodomy for food led the U.N. secretary-general this summer to order an investigation into how the case was handled.

In a statement marked "strictly confidential" and obtained by The Associated Press, Pansieri said she was distracted from the case by issues including budget cuts.

She assumed French authorities were handling the allegations, even as France pressed the U.N. for information.