81.   Nichols was initially held as a material witness to the bombing.

82.   Nichols, who federal agents have linked to the conspiracy, is at this point still being held as a material witness rather than a suspect.

83.   Nichols and his brother Terry, who lives in Kansas, are being held as material witnesses.

84.   Nichols has been detained as a material witness in the Oklahoma bombing, and attended some meetings of the Michigan Militia, a paramilitary organization.

85.   Neither brother has been charged with a crime, but are being held as material witnesses to the Oklahoma City bombing.

86.   Officials transported Al-Marabh to New York on a material witness warrant Sunday to face questions as part of the terrorist probe.

87.   Nor is it clear how many detainees are being held as material witnesses, how long the government intends to hold them and how many have obtained legal representation.

88.   Of those held, about two dozen were believed to be material witnesses, according to the last set of figures released by the Justice Department in November.

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

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