The police do not yet have enough evidence to build cases against the other key suspects.
Little is known about the strength of the British government's evidence against the suspects.
He said charges against the suspects would be announced then.
Although the Government has found physical evidence to use against all the suspects, none of them had the trailer.
The state attorney sought the death penalty against the suspects.
That she testified against the two suspects, who were convicted.
The evidence against the four suspects, however, was not considered strong, leaving open the chance for an acquittal.
Charges against the other five suspects are expected to reach the grand jury in January.
The indictment also included separate specific charges against the suspects.
The case against the suspects appeared to be strong.