A superseding indictment added the murder charges against them after Mr. D'Arco and Mr. Chiodo began cooperating.
A superseding indictment in 1993 brought more serious charges against him.
A superseding indictment was returned against Hammami in 2009 on terrorism violations for leaving the United States to join al-Shabaab, a terrorist organization.
A superseding indictment in 1993 accused him of sanctioning the murders of six mobsters and plotting to kill three others, including John Gotti, the Gambino boss who was his former archrival.
A superseding indictment added three more defendants to the case.
But the Government plans to bring a broader superseding indictment against Mr. Milken that is said to include more charges and other defendants.
A superseding indictment early this year added the murder charges.
On July 11, 1996, the government entered a superseding indictment that replaced the original allegations with 70 counts.
A superseding indictment with no additional defendants would not preclude others being charged separately in the future, lawyers said.
March 17, 2009 - A superseding indictment includes new charges against Dreier.