Two vehicles were burned and spray-painted with the phrases “Regards from Palmer and son,” “one year since murder,” and “revenge” near Hebron on Tuesday. A star of David was also sprayed on a nearby garage door.

Police launched an investigation.

The spray paint was likely a reference to Asher Palmer, a West Bank settler who was killed, along with his 1-year-old son, Jonathan, while driving along Highway 60 in the West Bank near Hebron in September 2011. Palestinians allegedly threw stones at Palmer’s vehicle, causing it to overturn.

The wreckage of the car Asher Palmer and his son were traveling in when they were killed last year. (photo credit: Yossi Zamir/Flash90)

The wreckage of the car Asher Palmer and his son were traveling in when they were killed last year. (photo credit: Yossi Zamir/Flash90)

Officials believe the attack on Palmer was in retaliation for a previous “price tag” act of arson at a mosque near Nablus earlier that month. Vandalism and other attacks against Palestinians by settlers in retaliation for Israeli government actions are referred to by their perpetrators as “price tag” actions.

Earlier this month, police arrested three boys — aged 12 and 13 — on suspicion of throwing a fire bomb that injured six Palestinians in a taxi near the West Bank settlement of Bat Ayin on August 16.

Five of the injured were members of the same Palestinian family, from nearby Nahalin. The parents, 35 and 27 years of age, suffered second-degree burns in the attack, while their three children and the driver suffered first-degree burns.

Jewish extremists are also suspected in another price-tag incident this month — in which arsonists torched the door to a home in the Palestinian village of Kafr Ata, near Nablus. There were no reports of injuries in the incident.