Twenty one trees and seven branches stand in memory of the victims of the 1992 Israel embassy bombing in Buenos Aires, Argentina.

Relatives of victims of the 1992 bombing of the Israeli Embassy in Buenos Aires will fly to Argentina in two weeks to mark the 20th anniversary of the attack that took the lives of 29 people and wounded many more, Israel Hayom reported.

Iran was declared to be behind the terrorist attack. The explosion destroyed the embassy building, as well as a nearby Catholic church and local school.

This year’s ceremony takes place under the shadow of Hezbollah’s threat to attack Israelis and Israeli embassies throughout the world. Israeli diplomats said that in addition to remembering those killed in the attack, they also intended to mark the anniversary by raising awareness of the Iranian connection to terrorism.

The official ceremony—which will be broadcast live in Argentina and attended by Deputy Foreign Minister Danny Ayalon—will include speeches by senior Israeli and Argentine officials.

The Foreign Ministry views the Buenos Aires attack as an open wound, especially since the perpetrators have yet to be apprehended.