Shalom Dayenu,
I have not heard of this till you brought it up. From the initial reports I see it seems you are correct. He is suffering a great injustice at the hands of wicked edomites. It is a mitzvah for every Jew to work to secure the release of Jews being held by non-Jewish tyrants. We cannot allow this religious Jew to suffer any more.
We must get the word out about his situation. Here is a report from ABC news on his situation: