Secretary-General Ban Ki-moon's office issued a statement Thursday expressing "grave concern" about the incident, but said U.N. officials lacked details about exactly what had happened.
He called the incident a "matter of grave concern to the United Nations, " adding that the safety and welfare of civilians must be a top priority in the planning of any military operation.
He identified only one incident which coincided with Mr Moloney's book Voices From The Grave, based on interviews with other ex-paramilitaries for the same project.