A lawyer from the Palestinian Prisoners Society told Ma’an that Israel’s Jalama military court extended Amar’s detention for a further 15 days to continue the interrogation process.
The detention period of two people accused of helping Amar was extended by 14 days.
Sergeant Tomer Hazan, 20, was killed by Nidal Amar, 42, a resident of Beit Amin in Qalqiliya last Friday, Israel’s army said.
Amar allegedly lured Hazan to the village of Beit Amin before killing him and throwing his body down a well.
He told interrogators that he had killed the Israeli soldier in order to use the body as a bargaining chip to free his brother, who has been jailed in Israel since 2003.