In some circumstance I would say that crimes committed over sixty years ago by a man who is now 94 should be forgotton. But in this case it must be pursued until the very end. Firstly the crimes are so great that they cannot be ignored but secondly it would be a useful reminder to the world about the holocaust, particularly when those who deny it's occurence (notably fascists but also militant Islam) appear to be getting bolder in their assertations.

If he's alive they must find him and convict him.