Don't currently have? Sure. The quote says "At that time, we had no evidence" so I think that would be harder to argue. You could maybe make the case the statem

Don't currently have? Sure. The quote says "At that time, we had no evidence" so I think that would be harder to argue. You could maybe make the case the statement means: At that specific moment we didn't have any evidence because we already destroyed it. But it certainly implies they mean they had not found any before that point in time.