He called for a United Nations investigation into war crimes committed by both sides.

Neither was he served notice to appear in front of the United Nations investigation on the matter.

But he said his committee's investigation would "continue to make inquiries" while the United Nations investigation was under way.

An internal United Nations investigation into the affair was ordered last week.

Then, the United Nations investigation showed, he started using registry revenues to buy weapons.

So, a United Nations investigation found, they decided to kill him.

However, both left the door open to a more limited United Nations investigation.

Syrian officials have been implicated in the United Nations investigations.

A United Nations investigation found no evidence of a massacre.

One such step would be to draft detailed provisions for United Nations investigations of possible violations.