According to the Mossad, coordinated raids in Austria and Germany resulted in arrests and the seizure of weapons and explosives intended for use “on command.”

A network of Hamas terror-affiliated infrastructure across Europe was exposed by the Mossad, the spy agency said on Wednesday, as it revealed the prolonged investigation it had conducted with European intelligence and law enforcement to thwart planned attacks against Israeli and Jewish targets.

The Mossad said that already in September, it had assisted European authorities in identifying Mahmoud Naim – the son of a top Hamas official, Basem Naim, who is himself a senior adviser to Hamas leader Khalil al-Hayya – as the orchestrator of this overall plot. According to the Mossad, Naim had met with his father in Qatar to facilitate the ploy, illustrating that Hamas, at its highest levels, was sponsoring terrorist schemes.

Hamas officials in Turkey have also been involved.

Mossad disrupted 'dozens' of Hamas terror ops.

Since Hamas’s October 7 massacre, the terrorist organization has accelerated efforts to build cells and logistics in Europe, mirroring the activity of Iran and its proxies. The Mossad said it continues to disrupt “dozens” of varying attack plots worldwide regularly as part of Israel’s overseas counterterrorism mandate.

It credited “close, persistent cooperation” with European services for recent breakthroughs and said efforts are ongoing.

“The Mossad, together with its partners in Israel and worldwide, is working relentlessly to thwart attacks against Israeli, Jewish, and other innocent civilians across the globe,” it said in a statement.

Recent arrests of Hamas members across Europe

Austria’s civilian security agency in Vienna, the Directorate for State Security and Intelligence, uncovered and confiscated a weapons stash in September that included handguns and explosive materials, leading to the detention and questioning of suspects tied to a Hamas network. Local media later detailed the discovery of a Hamas-linked cache in the city and a related, subsequent arrest in London.

European partners have expanded cooperation with Israel’s services while also tightening legal measures against Hamas-linked incitement and financing networks, the Mossad said.

In Germany, recent prosecutions and raids have targeted alleged Hamas operatives and supporters, reflecting a broader shift to curtail extremist infrastructure across the continent.

Meanwhile, German authorities, in separate operations, arrested multiple suspects last November on suspicion of acting on behalf of the terrorist organization by supplying weapons, with police reporting finds that included assault rifles, pistols, and ammunition.

Additional arrests followed this month, as investigators said a Hamas-associated operative helped procure arms for planned attacks in Europe.