Choppers were in the sky and volunteers took part in the search for 23-year-old talmid yeshiva Aaron Sofer the entire Shabbos.
He was walking with a friend but the two lost sight of one another going down an incline in the Jerusalem Forests.
Zaka and Ichud Hatzalah assisted police in the search over Shabbos.
The friend notified police at 6 PM and police phoned Zaka at 1:45 Friday night. Zaka commander Rav Bentzi Oring turned to rabbonim and the word was give to launch a search in the Beit Zayit area of the Jerusalem Forest.
Aaron is a resident of Lakewood, and is currently learning by Rav Tzvi Kaplan. He was last seen at noon on erev Shabbos in the Jerusalem Forest. Anyone with any information is urged to contact 02-539-1520 or 100.