And 75 percent said there was an official cover-up in the case.

Reports of the massacre are sketchy because the official cover-up for the incident was so effective.

There was an official cover-up of the cannibalism.

There are also charges of official cover-ups, which continue to occupy conspiratorialists of the Internet.

And maybe some official cover-up afterward.

But Whitewater has reached into the 1990's to include claims of official cover-up and misuse of government information.

Even today, the official cover-up continues.

The authors allege there are problems with "the official story" and that there is evidence of an official cover-up.

I wouldn't like to say whether there has been an official cover-up or not.

To do so, he said, underscores the official cover-up.