Its like the Jewish centers they have on uni campuses, except there is usually a resident rabbi and family. Thats probably who is being held hostage. Israel has sent a lot of rabbis to India to set up Chabad houses for their "wayward" [ie pot smoking] troops, to bring them back to the right path.
http://timesofindia.indiatimes.com/articleshow/1625062.cms
Israel didnt "sent" them, they just care. never met a chabadnik I see. anyway, best of wishes to all the hostages. I really pray and hope for their well being.