Friday afternoon, Israeli soldiers fired gas bombs and rubber-coated bullets at a peaceful procession against the Separation Wall in the village of Marda, near the West Bank city of Salfit.
A medical source in Salfit reported that dozens suffocated after inhaling gas fired by the army.
Also, soldiers arrested one international peace activist.
The WAFA news agency reported that soldiers also fired rubber-coated bullets and gas bombs at a mosque, and a procession against the Wall.
At least three women were hospitalized in Salfit, and dozens of protestors received first aid by field medical teams.
Earlier on Friday, Israeli soldiers closed the entrances of Salfit, and installed dozens of roadblocks around the city and the surrounding villages.