More beheading planned in Saudi Arabia.

A group of U.N. experts has joined rights groups in calling on Saudi Arabia to halt the execution of a Shiite man convicted of crimes reportedly committed as a teenager during protests inspired by the Arab Spring.

Ali al-Nimr, the nephew of firebrand Shiite cleric Sheikh Nimr al-Nimr, faces execution by beheading and an additional rare punishment of “crucifixion,” which means publicly displaying the body after death as a warning to others, according to Saudi state media.

“Any judgment imposing the death penalty upon persons who were children at the time of the offense, and their execution, are incompatible with Saudi Arabia’s international obligations,” the U.N. group said in a statement Tuesday, invoking the U.N. Convention on the Rights of the Child, to which Saudi Arabia is a party.

He was 17 when he participated in some protests.

Rights groups such as Amnesty International allege that Saudi Arabia is one of the world’s worst offenders when it comes to judicial killings.

A report published by the group in August claims that at least 102 people were executed in Saudi Arabia in the first half of 2015 — a rate of one every two days, and a larger number than during the entire year before. The government has not commented on the report.

Of course the US is also one of the world’s worst offenders when it comes to judicial killings.