Diplomatic Immunity. Do you know someone with Diplomatic Status?

Question

Recently a terrorists organization has been caught in the act of terrorists activity against people who have Diplomatic Influence or know someone with Diplomatic Immunity. You should ask any foreigners that you know if they have Diplomatic Immunity and notify the United Nations if you have such influence by way of typed and signed letter through a delivery service other than through US Mail. What do you feel should happen to those people that are responsible for such terrorists activity and what do you think should happen to them in the future if they continue in such activity?

Answer 1

I wish I knew about diplomacy...

Answer 2

That doesn't make sense if people have been caught in activity AGAINST people with diplomatic immunity to turn them in.  

A person who does such a thing and is caught would be considered persona non grata and returned to their nation of origin.  Some times, in the case of an egregious offense the nation of origin may allow the host country to use their own system.