JERUSALEM — Activists say a Palestinian protester who was injured by Israel forces has died of his wounds. Israeli pro-Palestinian activist Jonathan Pollack says the 28-year-old protester, Mustafa Tamimi, died in an Israeli hospital Saturday from severe brain damage. Tamimi's relative Mahmoud Tamimi also confirmed his death. Protesters say Tamimi was hit in the face Friday with a gas canister fired by Israeli forces in the West Bank village of Nabi Saleh. An Israeli military spokeswoman said they are investigating the incident. Palestinians have held weekly demonstrations there for the past few years to protest Jewish settler activity in the area. The Israeli rights group Btselem says Tamimi is the 20th person to be killed at similar West Bank demonstrations over the past eight years.