Iran has offered to aid the investigation into the deadly bombing of a Buenos Aires Jewish centre, 17 years after the attack.
Argentinian prosecutors have long implicated Iran in the AMIA blast, which left 85 people dead and 300 people with injuries. But although six Iranians are on Interpol's most wanted list for suspected involvement, no arrests have been made.
In a statement, the Iranian Foreign Ministry said it would co-operate with the investigation in order to "shed all possible light" on what happened. However it continued to deny being behind the attack.
The Argentinian Foreign Minister, Hector Timerman, said that if the help did materialise it would represent an "unprecedented and very positive advance from the Iranian authorities".
However the offer was also viewed with suspicion, with Alberto Nisman, a prosecutor for the case, telling JTA that "declarations empty of real content" were not enough and Iran needed to bring all the suspects to justice.
Today is the 17th anniversary of the bomb, which followed the deaths of 29 people in a blast at the Israeli embassy in Buenos Aires two years earlier. Investigators also linked Iran to that attack.