Arrest them. They are obviously admitting to a terrorist act!!!!!!
They are in our country and supporting terrorist act. I don't care if it is a false confession or not. We are in a state of war and the enemy has outed themselves for our capture. Don't tell me about rights. These are the folks that hide behind the American Justice system.
For the record, it is not illegal to be a member of AlQueda any more than be a member of KKK. There is a law however passed in the 90s then again in 2000s that say anyone associated with the support of terrorism against the US is illegal.
Send them to gitmo until the end of this war!!!