Suspected Jewish extremists torched two cars near the West Bank city of Nablus on Wednesday, police said, a day after Palestinians beat and detained Israeli settlers in a nearby village.
The vandals also scrawled Hebrew graffiti, including the words "price tag" on a wall in Madameh village, west of Nablus, police spokesman Micky Rosenfeld told AFP.
"Price tag" is the euphemism for anti-Palestinian attacks by Jewish extremists, which often take place after unrest in the West Bank.
The incident came a day after Palestinians beat and detained around a dozen settlers in Jalud village, south of Nablus, before releasing them.
Palestinian security sources said the settlers, some of whom were masked, were attacked after earlier clashes in the nearby village of Qusra.
Their release was eventually negotiated by Israeli soldiers, an AFP correspondent said.
Price tag attacks were initially in retaliation for state moves to dismantle settler outposts, but have broadened in scope in recent years to become a standard response to anything perceived as anti-Israeli.
The area around Nablus is the scene of frequent clashes between Palestinians and Jewish settlers.