The attorney general's office said that the arrests, that took place on Tuesday, are associated with charges of illicit association, smuggling prohibited items into prisons, and falsifying documents.
Today's ruling dropped charges of illicit association against Emir Yoma, Mr. Menem's former brother-in-law and business associate, who prosecutors said was put in charge of a gun-running scheme by the former president.
That illicit association has dogged it ever since.
Aldo Dadone was held on charges of "illicit association" and jailed.
Regarding my indictment for heading an illicit association, I authorized legitimate arms sales but did not take part in or have knowledge of the rerouting of the weapons.
In recent days, Mr. de la Rúa and his senior aides have said they thought it was a mistake to hold a former president under arrest on charges of "illicit association".
Sala's arrest last month on charges of fraud, extortion and illicit association has generated concern in Argentina's Catholic church that Macri and his political allies are determined to take on the social movements.
The Central American nation was praised for its crackdown on corruption in September after former president Otto Pérez Molina was ordered to stand trial for corruption, illicit association and bribery linked to a multimillion-dollar customs scam.
But after years of pressure from Washington and a spirited campaign led by Ms. Berenson's parents, a military tribunal ruled last August that she deserved a retrial in a civilian court on the lesser charges of "terrorist collaboration" and "illicit association," with the prosecution requesting a 20-year sentence.
The court threw out the more severe charge of illicit association of a terrorist character against the man, Mohamed Saif ur-Rehman Khan, who was detained last week after traces of explosive material were detected on his belongings during a check at the United States Embassy in Santiago.
