Officials generally must obtain permission from a judge to hold someone as a material witness.

Dunn was arrested immediately and held as a material witness.

Otherwise, I will have you held as a material witness.

He has since been held in Brooklyn as a material witness.

But since her surrender she has been held as a material witness and could not be reached for comment.

"Only after a lot of pleading did they tell her that he was being held as a material witness."

We'll make sure he's held as a material witness and then begin the process of preparing him for trial.

If the police happened to look in now you might be held as a witness.

The lieutenant said he'd have to hold her as a material witness.

If necessary, the district attorney can hold her here as a material witness.