VIENNA — Austria’s domestic intelligence service has uncovered a weapons cache in Vienna that is believed to be linked to the Palestinian militant group Hamas for use in “possible terrorist attacks in Europe,” the government said Thursday.

A 39-year-old unidentified British citizen allegedly “having close ties to the weapons cache” was arrested in London on Monday, the interior ministry statement said.

“According to the current state of the investigation, Israeli or Jewish institutions in Europe were likely to be the targets of these attacks,” it added.

The weapons cache and the suspect were part of an internationally coordinated investigation by the country’s Directorate for State Security and Intelligence service, or DSN, “into a global terrorist organization with ties to Hamas.”

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