All of the publicity, pro and con, state that they were part of the building of Givat HaOr (Hill of Light) near Beit El, when they were arrested. The soldiers (or police) were destroying it and arrested all of the civilian Jews in the area, even those not on the site.
My source says that the girls were just taking part in a "walk the Land" demonstration and weren't at all at Givat HaOr when the soldiers arrived.
It started as a case of "mistaken identity" but has mushroomed, since the girls have no respect for the courts.
Please, try to think about it. Even before Olmert was officially installed as Prime Minister, after the last elections two years ago, he was already announcing to Israel and the world that he was going to destroy most of Jewish life in Judea and Samaria. The communities he wants to destroy and hand the land (G-d forbid) to the Arab terrorists include Ma'ale Levona, where the students study and the vast majority of the communities where the students in that high school live.
Now, here we are, post Disengagement, where everyone learned the hard way that "love" isn't enough, and the government doesn't care about its citizens, Jewish History and Eretz Yisrael.
Teenagers see things very clearly, in black and white. It's a time of idealism, taking risks. I was a high school student when I decided to become religious.
How can you expect these wonderful idealistic teens to trust the police?
They must be released from jail!