Jewish extremists slashed tires and vandalized police cars in Jerusalem on Wednesday after police tried to arrest them, Israeli media reported. Dozens of extremists linked to recent 'price tag' attacks on Palestinians clashed with police in the city, Israel's Haaretz daily said. Six were reportedly arrested. Right-wing Israelis set fire to a mosque in Jerusalem overnight, a police spokesman said. Vandals sprayed the Star of David and racist graffiti including "Muhammad is a pig" and "A good Arab is a dead Arab" in Hebrew on the mosque's walls. In a string of attacks, settlers also set fire to several cars in northern West Bank villages. Hebrew-language graffiti found in the villages bore the hallmark of a "price tag" attack, an Israeli army spokesman said, although he declined to elaborate. The incidents came just 24 hours after a group of settlers attacked an army base in the northern West Bank and sabotaged vehicles there, in an attack which was angrily denounced by Israeli Prime Minister Benjamin Netanyahu and other top officials. Settlers also broke into a closed military zone along the Jordanian border and staged a protest on Monday night. Defense Minister Ehud Barak told Army Radio on Wednesday that "there is no doubt that this is the conduct of terrorists: terrorism, albeit Jewish."