The United Nations says Zimbabwe's government has blocked a visit by the world body's torture investigator who was to examine alleged abuses of opposition supporters and others.
The office of the U.N. High Commissioner for Human Rights says Manfred Nowak was initially invited to Zimbabwe from Oct. 28 to Nov. 4.
It says the Austrian law professor was told by Zimbabwe's government that it was unable to receive him now because of ongoing talks with the opposition about the country's fragile power-sharing agreement.
The U.N. said Wednesday that Nowak doesn't consider this a valid reason to cancel the visit.
Opposition supporters and human rights defenders have accused President Robert Mugabe's aides of violence, harassment and carrying out arbitrary arrests.