51.   His brother, James, is also being held as a material witness.

52.   Hunt said he had never heard of Rudolph until the FBI issued a warrant last Friday for his apprehension as a material witness.

53.   In criminal cases and in the case of material witnesses, the individual has the right to a lawyer at government expense, he said.

54.   In addition to the arrest of the material witness, as many as two dozen people had been detained on immigration and other charges unrelated to the case.

55.   In contrast, James Charles Kopp, who is being sought as a material witness in the killing of Slepian, left a trail of clues about his motives.

56.   In New York, a federal judge recently ruled that the department should not jail material witnesses for the grand jury.

57.   In the hope of getting the case started, Judge Berkman directed the police to arrest Ms. Gonzalez as a material witness.

58.   In the early days of the investigation, the Justice Department acknowledged that two people had been arrested on material witness warrants.

59.   In the weeks after the attack, the FBI arrested four San Diego-area men as material witnesses.

60.   Investigators arrest material witnesses when they believe they have valuable information about a case and could be a flight risk.