The first time he heard the site was dangerous, he said, was when the United Nations investigators arrived.
And Iran has now agreed to a second visit by a United Nations investigator.
The number of cases may be impossible for United Nations investigators to determine precisely.
United Nations investigators counted 62 bodies, including the charred remains of 16 infants and young children in one house.
Certainly United Nations investigators never asked to see the many hours of footage we took.
The commission also instructed a United Nations investigator to report broadly on incidents of prejudice to its next meeting.
In 1992 United Nations investigators used the same pit to destroy 464 rockets containing nerve gas.
United Nations investigators suspect that some of them had been eaten during the war too.
Reference has already been made to the alarming evidence obtained by United Nations investigators in Iraq.
United Nations investigators have linked Syria to the killing.
