German prosecutors have brought charges against four men who are suspected of being operators for Hamas’s underground depots that the terrorist group operates in Europe to attack Jewish targets. 

Germany’s Office of the Federal Public Prosecutor announced on Monday that it had filed charges against the four men — including one Egyptian, one Dutch national, and two Lebanese nationals. The men are “strongly suspected of membership in a foreign terrorist organization,” authorities said. 

Although the militant Islamist organization’s leadership is based in the Gaza strip, the group has readied underground weapons caches across Europe, prosecutors said.

“Some time ago, HAMAS set up underground weapons depots in various European countries in order to keep them ready for possible attacks against Jewish institutions in Europe,” the statement said, noting that Hamas uses “so-called foreign operators” — usually people with European residence permits — to operate the depots.