Harvard Law School Professor Emeritus Alan Dershowitz weighed in Saturday on how federal authorities treated former national security adviser Michael Flynn.

“There are two issues: Did he lie at the time the FBI came to him? The answer is yes. Could he have told the truth? Yes. The second is: Does the fact that he pleaded guilty prove that he’s guilty? Absolutely not. He pleaded guilty because of the enormous pressures on him even though I think he could have won the case,” Dershowitz said in a Fox News interview Saturday.