71.   Last month, Simpson trial Judge Lance Ito issued a certificate that Allen was a material witness in the trial.

72.   King said that because material witnesses are not charged with a crime, they have fewer rights than a suspect.

73.   Law enforcement authorities arrested a second person as a material witness Saturday evening.

74.   Law enforcement officials say they cannot release any more information about the two material witnesses because of federal grand jury rules.

75.   Material witnesses are described as people who have direct knowledge important to an investigation who are detained to prevent flight.

76.   Material witness warrants are used to detain people believed to have crucial information about a case if prosecutors fear they might flee.

77.   Meanwhile, there were also media reports Thursday that a federal judge in Seattle had issued an arrest warrant for a material witness in the Ressam case.

78.   Material witnesses are people believed to have direct knowledge of a crime and can be held to prevent flight.

79.   Meanwhile, a Somalia-born U.S. citizen, Mohamed Abdi, is denied bail in a suburban Washington courtroom and is held as a material witness.

80.   Most material witnesses are held in organized crime or drug cartel investigations to protect their lives.