The teen's principal and teacher were arrested on Thursday night under suspicion of negligence that led to his death, and this morning (Friday) were put on house arrest for 5 days.
Search teams — including a police helicopter — from Israel Police, Border Police and volunteers from the Etzion-Yehuda Rescue Unit searched throughout the evening, eventually finding him at the reservoir.
MDA paramedic Nissim Salem said in a statement following the incident that "When we arrived at the scene we noticed the reservoir of water from which the boy was pulled. He was unconscious, with no pulse and not breathing. We performed medical tests but he was without signs of life and we had no choice but to determine his death."
A spokesperson for the ZAKA rescue and recovery organization said that the boy was found by ZAKA's diving unit.
Haim Otmezgin, commander of ZAKA's special units division said that "Tonight, around 8 p.m., the crews of the diving unit and ZAKA volunteers set off in search of a 14-year-old boy who went with his classmates for a walk in the Eucaliptus Park near Beit Shemesh and went missing."
The Education Ministry announced that it had stopped all of the school's trips, and that the incident is being investigated by the police. It also announced that a team of psychologists and educational advisors has been sent to the school to provide support and assistance, and will continue to do so in the near future. In addition, the Ministry said it will accompany, support and assist the boy's family.