Israeli bombs hit residential building in Gaza City

Sirens blared in Tel Aviv overnight and the sound of rockets being shot down by Israel's Iron Dome system filled the sky, sending thousands of Israelis to shelters.

By dawn on Thursday, Israel had renewed its air strikes on the Palestinian coastal enclave, destroying a six-story residential building in the middle of Gaza City.

As world powers reiterate calls for calm, a wave of violence between Jewish Israelis and the country's Arab minority has continued to spread in several Israeli cities, with attacks on synagogues and Arab-Jewish fighting in the streets.