dnt american yeshiva student missing israel_00014216.jpg
American student missing in Israel
01:43 - Source: WCBS

Story highlights

NEW: The missing man's brother says the family are "praying hard"

Aaron Sofer disappeared while hiking in the Jerusalem Forest

Police are searching in the forest and have questioned a friend who last saw Sofer

Sofer, 23, is a Yeshiva student studying in Israel

CNN  — 

The father of a New Jersey man who went missing while studying in Israel has joined police and hundreds of volunteers searching the forest outside Jerusalem where his son disappeared.

Aaron Sofer was reported missing on Friday by a friend who he was hiking with in the Jerusalem Forest, Israeli Police spokesman Micky Rosenfeld told CNN.

Sofer, 23, from Lakewood, New Jersey, is a Yeshiva student studying in Israel.

“We are looking in a number of directions,” Rosenfeld said. “It is not clear if the disappearance was personal [or a] kidnapping. It’s not clear at all.”

Map: Jerusalem

Police are searching the forest and have questioned a friend of Sofer’s who was “the last man who saw him face-to-face, eye-to-eye,” Rosenfeld said.

The friend “lost contact” with Sofer while walking with him and reported the disappearance to the police, Rosenfeld said.

The missing man’s brother, Joel Sofer, told CNN Tuesday that family members are “just praying hard and doing everything we could do.”

His brother, Joel Sofer, told CNN on Tuesday that family members are “just praying hard and doing everything we could do.”

He said he had visited the area where his brother went missing.

“I actually was over there today on site,” he told CNN’s Jake Tapper. “And you know, there’s nothing. They have no evidence. They can’t find anything.”

Binyomin Isseeman, Sofer’s rabbi in Lakewood, called the young man a “very normal, a very healthy boy.”

“His mind is clear, no problems at all,” Isseeman said to CNN affiliate WCBS reported.

Republican Rep. Chris Smith of New Jersey said the U.S. Department of State was helping Israeli authorities in the search for Sofer.

“There are concerns, as we all know, about the possibility of abduction,” Smith said, according to CNN affiliate News 12 New Jersey.

Sofer’s disappearance comes two months after what Israeli authorities have called the revenge killing of Palestinian teen Mohammed Abu Khedair, 16. His body was found in the Jerusalem Forest on July 2, just miles from where Sofer went missing.

Two minors and an adult were indicted in the killing. Prosecutors allege the killing was retaliation for the deaths of three Israeli teens whose bodies were found in the West Bank in June. One of the Israeli youths also had American citizenship.

READ: Israel: 3 indicted in Palestinian teen’s ‘revenge’ death

READ: Israel’s ‘refusers’: Why we too feel ‘occupied

CNN’s Jethro Mullen contributed to this report.