When you're suspected to be a wanted person and refuse to be identified raising more suspicion, you're on your way downtown no matter who the law enforcement agency is. All is needed for a detainment is reasonable suspicion. All I can say is don't listen to shithouse lawyers.
The agents on the street aren't responsible for SNAFUs by office people. Again, all the idiot had to do was place his finger on the fingerprint device.
There is a word for that, kidnapping. Kidnapping is a very serious felony.