Updated

The U.N.'s top human rights official has told diplomats that Israel's military and Hamas militants appear to have violated international humanitarian law and might have committed war crimes during their two-week war in the Gaza Strip.

U.N. High Commissioner for Human Rights Navi Pillay said Wednesday that around three-quarters of the 650 Palestinians and 31 Israelis killed in the conflict were civilians, and thousands more have been injured.

Pillay told the 47-nation U.N. Human Rights Council that the situation in Gaza requires its urgent attention because of "a strong possibility that international humanitarian law has been violated, in a manner that could amount to war crimes."

Pillay says every allegation of human rights abuses "must be properly and independently investigated."