Start with the 1st option and see how they react.
Okay.
From the OP's article, which had nothing to do with a relative's involvement in a terrorist attack, I assume he is just showing us the terrorists' heinousness, which therefore means we should by all means throw out the Constitution and all Common Sense and just prosecute the willy nilly out of anyone who even KNOWS a terrorist. I mean, why stop with the family? His neighbors probably knew too, right?
The investigators who look into terror attacks are a very suspicious lot, and they will definitely look at everyone who knew the terrorist. If there is
evidence the family members knew and said nothing, I agree they should get thrown in prison. Otherwise, no.