Mr. Hill, who was not prosecuted for his role in the case, testified against other participants.
All four, now unindicted co-conspirators in the case, testified before grand juries.
Rodriguez, according to the people briefed on the case, testified in 2010 before a federal grand jury hearing evidence in the case.
Four admitted terrorists took the stand as cooperative witnesses for the government in the case, testifying that they had sworn to fight on behalf on Al Qaeda.
Akshay Thakur, another man accused in the case, testified in court this week that he was receiving death threats from guards inside the jail.
The man, who testified under tight cover and was identified in court only as M.B. because he was considered a victim in the case, testified that he had read about it in a newspaper, as the suicide prompted international attention.
But Frank Garr, the inspector who currently leads the investigation and who worked for years with Mr. Solomon on solving the case, testified that Mr. Littleton had never made any admissions to his wife or to law enforcement officials.
agent in charge of the case, testified at a pretrial hearing that Mr. Pierre belonged to Al Fuqra, which Mr. Gallagher said was "suspected in at least 17 bombings and assassinations and 12 murders".
— The Long Island teenager accused of killing a Hispanic immigrant in 2008 confessed to the police that he had stabbed the man after he and a group of friends agreed to go looking for a Mexican to beat up, the lead homicide detective in the case testified on Monday.
Craig Appel, the lead detective on the case, testified under cross-examination that Mr. Holmes exhibited odd behavior during his interviews with the police after the shooting, at one point pulling a staple out of a table and trying to place it into an electrical socket.
