Israel has outlawed an Islamist party accused of inciting violence among the country's Arab citizens, the government announced Tuesday, as part of measures to stamp out a two month-long deadly escalation. The government declared the Northern Branch of the Islamic Movement of Israel illegal, saying its activists could be subject to arrest if they violate the ban. The party, which provides religious and educational services for Israeli Arabs, routinely accuses Israel of trying to take over a sensitive holy site in occupied Jerusalem, a charge Israel denies. The site is at the heart of the latest surge in Israeli-Palestinian violence. After the decision, Israeli forces searched more than a dozen of the group's offices around the country, seizing computers, files and funds, police said. Authorities also froze its bank accounts and said that 17 organizations affiliated with the party were served with orders to close down. "The time has come for us to use all the tools at the country's disposal in the war on terror and against the inciters who cause it," Public Security Minister Gilad Erdan said in a statement. Radical cleric Raed Salah, the group's leader, was defiant, saying his party would fight the measure and continue its mission. "All these measures done by the Israeli establishment are oppressive and condemned," Salah said in a statement, adding that he and two other party leaders were summoned to police questioning. Separately, Salah is set to start an 11-month jail term later this month in connection with incitement charges from a 2007 sermon. The current round of violence erupted in mid-September over rumors that Israel was trying to expand Jewish presence at Al-Aqsa Mosque compound and spread to the West Bank, Israeli cities and the Gaza border. Palestinian attacks, mainly stabbings, have killed 14 Israelis, and at least 83 Palestinians have been killed by Israeli fire, including 51 Israel says were involved in assaults. The rest were killed in clashes with security forces. Salah has alleged in speeches and annual rallies under the heading "Al-Aqsa is in Danger" that Israel plans to expand its control there. Since 2001, the Islamic Movement has bused tens of thousands of supporters to the mosque compound every year to strengthen the Muslim presence. Several years ago, the movement helped form groups of male and female activists, known as "Morabitoun" — loosely translated as defenders of Islamic lands — who spend hours each weekday at the shrine trying to disrupt visits by Jews. During periods of tension, police at times block busloads of Islamic Movement supporters from occupied Jerusalem. Earlier this year, Israel outlawed three associations suspected of funding the Morabitoun and later declared the groups illegal. Israel has beefed up security across the country, sending hundreds of soldiers to back up police, and setting up checkpoints and concrete barriers in Arab neighborhoods of east Jerusalem, where many of the attackers have come from.