Tel Aviv police are investigating a case of vandalism at a museum dedicated to a Jewish pre-state militia in the southern part of the city.

Museum guards who were patrolling the area Saturday night found that vandals had spray-painted the exterior walls of the Etzel Museum, with the graffiti calling the group “a terrorist organization” and using the words “price tag.”

Police officers collected footage from the museum’s security cameras in the hopes of finding clues to the identities of the perpetrators.

Etzel, also known as the Irgun, was a paramilitary organization faithful to the Revisionist Zionist ideas of Ze’ev Jabotinsky.

The museum was established to commemorate the 41 of its fighters killed in the battle for Jaffa during Israel’s War of Independence in 1948.

The displays at the museum focus on the founding of the Irgun and its attempts to achieve an independent Jewish state in Israel, until the integration of the organization within the IDF.

“Price tag” attacks usually refer to vandalism of Palestinian property by Jewish right-wing extremists, though the term has been coopted by other miscreants as well.