Three Palestinians, including a 1 1/2-year-old child, were shot by unidentified gunmen near the Israeli West Bank settlement area of Gush Etzion, Palestinian sources said Friday.

Army Radio received a telephone call claiming responsibility for the shootings by a previously unknown group calling itself the "Zionist Avengers." The military said Friday that Israeli police were investigating the shootings.The three Palestinians were driving along the Jerusalem-Hebron road in the Israeli-occupied West Bank when the shooting occurred late Thursday, the sources said. The shooting occurred less than 20 miles south of Jerusalem near the Gush Etzion bloc of Israeli settlements.