The band was indicted earlier in March.
Smollett had rope around his neck when police first responded to his 911 call.
Unpaid child support and studio rent have left his financial situation crumbling.
The Smallville actress faced charges including sex trafficking, sex trafficking conspiracy, and forced labor conspiracy.
Eric Holder’s lawyer, Christopher Darden, previously served as prosecution on the infamous 1992 OJ Simpson trial.
Eric Holder was reportedly seen having a “tense exchange” with Hussle prior to the fatal shooting.
“The members of Sigur Rós are musicians — not experts on bookkeeping and international finance,” says the band’s lawyer.
The decision by Chicago prosecutors to drop all charges against Jussie Smollett has elicited bipartisan outrage.
New charges put credibility of lawyer who handed over alleged video tape into doubt.
The Empire actor had been accused of lying to police about being the victim of a hate crime.
Hallmark Channel has also severed ties with the veteran actress.
Jung Joon-young, Choi Jong-hoon, and Yong Jun-hyung have quit entertainment.