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- Aug 19, 2008
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The question is not whether they have hard evidence.
The question here is how the authorities knew about this case. This is strictly a matter between the two. As you said, it is unlikely that the girl told her friends and then her friends reported to the authorities. It is even less likely that the prof had told others. So how could the authorities knew about it .... (answer is obvious - listen to Sting's Every breath you take).
You bang a prof for grades and don't keep mum? The girl has something to gain or there's more to meet the eye in this case.