Two torched vehicles with graffiti messages reading "Regards from Asher Palmer" and "Revenge" were discovered Tuesday in Kafr Sayeer, located northeast of Hebron.
Security forces launched an investigation.
Asher Palmer and his eight-month-old son were killed
about a year ago when their car went off the road after it was stoned on Highway 60, near Kiryat Arba in the West Bank.
Two Palestinians from Halhul, just south of Hebron, were indicted for nationalistically-motivated murder.
The prosecution argued that the defendants sought revenge over the torching of a mosque in Nablus.
According to the indictments, the two were part of a terror cell which carried out several similar attacks in the area "with the intent to kill."
Last week, in another suspected 'price tag'
act, Palestinians said unknown vandals entered the village of Awarta, near Nablus, spray-painted hate slogans on buildings and tried to burn two vehicles.
The vandals fled in a commercial vehicle after one of the residents spotted them pouring gasoline on the vehicles.