The ongoing clashes between Israel and Palestine are spiraling into a border conflict, with Palestinian militants along the Gaza Strip on Monday firing rockets toward Jerusalem as well as southern Israel.
The rockets were fired shortly after a deadline issued by Gaza's Islamist rulers Hamas for Israel to withdraw its forces following continued clashes.
Israel responded to the rockets with air strikes.
Gaza's health ministry says nine Palestinians, including three children, were killed in northern Gaza.
Israel's Prime Minister warned that such attacks will never be tolerated.
"This evening, on Jerusalem Day, the terrorist organisations in Gaza have crossed a red line and attacked us with missiles in the outskirts of Jerusalem. Israel will respond with great force. We will not tolerate attacks on our territory, on our capital, on our citizens and on our soldiers. Whoever attacks us will pay a heavy price.
As Israel celebrated “Jerusalem Day” on Monday, marking its capture of eastern sections of the holy city in the 1967 Arab-Israeli war, violence continued at the Al-Aqsa Mosque, Islam's third holiest site.
Israeli police fired rubber bullets, stun grenades and tear gas at Palestinian protesters who responded by throwing stones.
The Palestinian Red Crescent Society said more than 300 Palestinians were injured.
East Jerusalem is the heart of the Israel-Palestinian conflict, with both sides claiming rights over the area.
The international community, including the U.S. and European nations, have expressed concerns and are appealing for calm.
Kim Hyo-sun, Arirang News.