Posters reading, "Jerusalem is the eternal capital of Palestine" in Arabic were placed on several of the city's streets on Saturday.
Salah ad-Din Street, where the Justice Ministry and Jerusalem District Court are located, was among the targeted streets, along with Sultan Suleiman Street, where posters were placed on utility poles.
The act was an apparent reaction to U.S. President Donald Trump's Dec. 6 recognition of Jerusalem as Israel's capital.
Maor Tzemach, chairman of the Lach Yerushalayim ("For You, Jerusalem") advocacy group, which seeks to safeguard Israeli sovereignty in Jerusalem, said: "Unified Jerusalem has been the eternal capital of Israel for more than 3,000 years. No incitement or sticker will change this fact. Any incitement in the public sphere in Jerusalem must be met with a strong hand."