A 40-year-old man was attacked and seriously injured overnight Thursday at the entrance to a shopping center in Ma'ale Adumim, located to the east of Jerusalem.
The man was taken by Magen David Adom paramedics to the Hadassah Ein Kerem Hospital in Jerusalem.
The attacker fled the scene and police are searching for him.
The background to the incident is unclear. While terrorism cannot be ruled out, as attacks have taken place in the area in the past, so far police have not ruled out other motives either.