The army said the assailants fired at the soldier from a vehicle and sped away after the shooting. The attack occurred at the entrance to Ariel, a large West Bank settlement near the Palestinian city of Nablus.
The army said it found a burned car near Nablus that is connected to the shooting, but declined to provide further details.
Police spokesman Micky Rosenfeld said authorities were investigating the incident.
A previously unknown offshoot of Fatah, the movement headed by moderate Palestinian President Mahmoud Abbas, took responsibility for the shooting in a phone call to The Associated Press.
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