Child killed in the incident, Yehonatan Palmer.

Israel’s Ofer Base Military Court on Wednesday sentenced Waal al-Arja, a former officer in the Palestinian Authority’s security forces who was convicted of the 2011 murders of 30-year-old Asher Palmer and his year-old son Yonatan, to two consecutive life terms with an additional 58 years, Israel Hayom reported.

In early April, the court convicted Arja of two counts of murder for having thrown a rock at the Palmers’ car, causing it to crash, with fatal results. He was also convicted of 22 counts of attempted murder over a series of stone-throwing incidents on Route 60 in Judea and Samaria.

Arja drove up to Palmer’s car, which was traveling from Kiryat Arba to Jerusalem, and threw a large rock at it. The rock shattered Palmer’s windshield and hit him in the face, causing him to lose control of the vehicle, which swerved and overturned, landing on the side of the road. Palmer and his son were killed on impact.

Murder convictions in cases involving the stoning of cars traveling across Judea and Samaria are rare, but Military Judge Maj. Amir Dahan said that in Arja’s case the prosecution “proved that he had the intent and means to kill.”