Israel bombed the home of Hamas's chief in Gaza early on Sunday and the Islamist group fired rocket barrages at Tel Aviv as hostilities stretched into a seventh day with no sign of abating.

At least three Palestinians were killed in Israeli air strikes across the coastal enclave, health officials said, and many were injured as the sounds of heavy bombardment roared through the night.

Israelis dashed for bomb shelters as sirens warning of incoming rocket fire blared in Tel Aviv and its suburbs. Around 10 people were injured while running for shelters, medics said.

At least 148 have been killed in Gaza since the violence began on Monday, including 41 children, health officials said. Israel has reported 10 dead, including two children.

Envoys from the United States, United Nations and Egypt were working to restore calm but have yet to show any signs of progress...