A gunman on a motorcycle opened fire in a city in central Israel late Tuesday, methodically gunning down victims as he killed at least five people in the third such street attack in a week. The shooter was killed by police.

Israeli media said the attacker was a Palestinian from the West Bank, the third Arab assailant to launch an attack ahead of the Muslim holy month of Ramadan. The previous two attacks, carried out by Arab citizens of Israel inspired by the Islamic State extremist group, have raised concerns about further violence.

Israel “stands before a wave of murderous Arab terrorism,” declared Prime Minister Naftali Bennett. He pledged to combat it “with perseverance, stubbornness and an iron fist.” He held an emergency meeting of top security officials and planned a meeting of his Security Cabinet on Wednesday.

Israeli authorities have not yet determined whether the attacks were organized or whether the attackers acted individually. The Israeli military announced it would be deploying additional troops to the West Bank, and the police chief raised the national readiness level to its highest.