Buenos Aires - An Argentine judge dismissed the cover-up case against President Cristina Kirchner on Thursday, but many questions remain around the 1994 bombing at the centre of the story and the mysterious death of the prosecutor investigating it.
The case against Kirchner was originally brought by late prosecutor Alberto Nisman, who was in charge of the inquiry into the deadly bombing at a Jewish centre in Buenos Aires.
He died the day before he was to appear before a congressional hearing to air his finding that Kirchner and her foreign minister plotted to shield Iranian officials implicated in the attack.
Here AFP looks at the key facts, background and questions still swirling around the case: The scandal is rooted in the July 1994 bombing of the Argentine Jewish Mutual Association, or AMIA, the deadliest terror strike in Argentina's history, which killed 85 people and wounded 300.
Two years earlier, also in Buenos Aires, 29 people were killed and 200 injured after a bomb attack on the Israeli embassy.
More than two decades after the attack, the matter is far from closed.
Two Argentine presidents, Carlos Menem and Cristina Kirchner, have been accused of obstructing the investigation.
After a lengthy investigation shrouded in controversy, several suspects were arrested in connection with the bombings, including police officers and a man suspected of supplying materials used in the bombing, Carlos Telleldin.
After a three-year trial, the investigation ended with the 2004 acquittal of all those charged.
The judge in charge of the 1994-2003 investigation, Juan Jose Galeano, was indicted, suspected of having paid $400 000 to Telleldin to incriminate a suspect.
In 2006, Nisman - appointed to lead a fresh investigation into the bombing - accused Iran of ordering the attack via Lebanese militant group Hezbollah.
In 2007, Argentine justice officials issued international arrest warrants for five Iranian officials, including former president Akbar Hashemi Rafsanjani (1989-1997), suspected of being the ringleaders of the attack.
In 2013, Tehran and Buenos Aires signed an accord to set up of a joint commission to probe the attacks, and allow an Argentine investigator to question suspects in Iran. The pact triggered an outcry from the Jewish community in Argentina.
After the failed trial in 2004, then president Nestor Kirchner appointed Nisman to head a special inquiry into the case.
Nisman, a divorced Jewish father-of-two, had been probing the AMIA bombing since the 1990s.
Critics accused him of being too close to the United States after the publication of classified documents by WikiLeaks in 2010 which detailed communications between Nisman and his office and US embassy staff in Buenos Aires.
On January 14, Nisman filed a 300-page dossier based on his investigation. It accused President Cristina Kirchner, Foreign Minister Hector Timerman and other figures close to the government of attempting to shield Iranians suspected of involvement in the bombing.
The explosive claims were based on information gleaned from hundreds of hours of wiretaps.
The president has suggested the allegations are part of a plot by disgruntled intelligence agents angered over her reorganisation of the intelligence services.
The government has turned the spotlight on Antonio Stiuso, who was sacked as operations chief of the intelligence services in December.
Kirchner has accused the powerful ex-spy of feeding false information to Nisman, and suggested that he then had the prosecutor killed to smear her.
A new prosecution team was meanwhile named to take over the case from Nisman. It formally renewed his accusations against Kirchner on February 13.
The mystery over Nisman's death has intensified since he was found January 18 in the bathroom of his 13th floor apartment, with a .22-calibre revolver beside his body.
Suspicions about the death are aroused by the fact that it came four days after he accused the president of a cover-up, and the day before he was to air his charges at a congressional hearing.
Nisman's mother, Sara Garfunkel, who found the body, and his ex-wife have said they do not believe he committed suicide.
The case is still under investigation.
AFP