11.   Officials have said only that the man is being held under a material witness warrant.

12.   One or more people arrested on material witness warrants are cooperating.

13.   One man, arrested in New York, was picked up on a material witness warrant executed Friday night.

14.   Padilla was arrested in Chicago on a field material witness warrant and subsequently transferred to New York.

15.   The FBI issued a material witness warrant for him a month after the Slepian shooting.

16.   The man is suspected of having information about plans for the attack and was arrested on a sealed material witness warrant obtained by federal prosecutors in Manhattan.

17.   A material witness warrant allows authorities to hold someone considered crucial to the investigation without charging him with a crime.

18.   A material witness warrant allows authorities to hold someone considered crucial to the investigation without charging him with any crime.

19.   An earlier material witness warrant for Oulai was dismissed earlier this year, The Florida Times-Union reported Saturday.

20.   Another person was sought on a material witness warrant.