Israel’s Mossad spy agency, which aided the Greek investigation, said in a statement that the two were part of an Iranian terror network, reports The Times of Israel.

The Iran-born pair, aged 27 and 29, were being held at police headquarters in central Athens, Greek authorities said, the newspaper reported.

A government official told The Associated Press that one of the targets was a Jewish restaurant in central Athens. Reports indicated that the target was a Chabad House, which includes a Kosher restaurant and also hosts other religious services.

Police said the suspects had chosen a target of “high symbolism” and were making final preparations for the attack.

“Their aim was not only to cause the loss of life of innocent citizens, but also to undermine the sense of security in the country, while hurting public institutions and threatening [Greece’s] international relations,” the police statement as quoted by The Times of Israel.