Three cars and a bus were set on fire late Monday night in the Arab village of Umm al-Qutuf in the Wadi Ara region.

Police suspect right-wing extremists were behind the crime as graffiti depicting a star of David and the words “price tag Evyatar” were spray painted on a nearby mosque. Yitzhar resident Evyatar Borowsky was killed in late April by a knife-wielding Palestinian attacker while waiting for a bus at the Tapuah Junction.

Menashe Regional Council head Ilan Sadeh condemned the attack, saying he would not allow such acts to “harm the unique coexistence between Jews and Arabs in the region.”

In Safed, anti-Arab graffiti was found spray-painted on a courtyard wall near student dormitories. Unknown individuals painted “Arabs out” and “Look out whores, we will burn you.” Local police launched an investigation.

Public Security Minister Yitzhak Aharonovich condemned the attacks and pledged that police would apprehend the perpetrators. He said the sole purpose of such attacks was to escalate tensions between Arabs and Jews.

Justice Minister Tzipi Livni has pledged to crack down on price tag attacks, which, she said, “harm the entire Israeli society, go against Israel’s democratic values, and represent the worst forms of racism.”

Price tag is a term used by right-wing Jewish extremists to describe revenge attacks carried out against the Palestinian population and the military as “punishment” for Israeli government decisions they perceive as being oriented against settlers.