Updated

Dozens of Jewish demonstrators have gathered for a minute of silence before the Argentina-Iran World Cup game.

Saturday's protest in front of the Sao Paulo Museum of Art comes nearly 20 years after a still unsolved bombing attack against a Buenos Aires Jewish center that left 85 dead. Prosecutors blame Iran for the attack and Jewish groups are outraged no one has been brought to justice for the worst terrorist attack in Argentine history.

Demonstrators held banners reading slogans such as "20 years without justice" and "a red card for lack of justice."

Organizer Dov Bigio said the game offered a rare opportunity to "express our need for justice."

He said similar protests were being held in Rio de Janeiro and in front of the game itself in Belo Horizonte.