In fact, many of the events they related were independently corroborated by other sources.
But the statements, extensive as they were, seemed to provide little hard evidence of her involvement that could be independently corroborated.
It was not possible to corroborate independently all the accusations the returnees made.
"She could not give us any person who could independently corroborate this child is hers."
When the allegations have not been independently corroborated, we should consider if it is appropriate to inform the audience.
Some of the details given by the man - whose full story could not be independently corroborated - dovetailed with comments from the American military.
Our findings have been independently corroborated and published in 50 peer-reviewed science articles.
The four survivors' accounts could not be independently corroborated, and it was unclear in some cases whether they actually saw the killings.
Due to limited access to victims and labor camp facilities, however, many specific reports of abuses are difficult to independently corroborate.
The one exception to this rule is that the Government may use the information if it can independently corroborate it.