Israel has carried out more air strikes on the Gaza Strip, following dozens of rockets fired by the Palestinian Islamist movement Hamas.
At least 15 Palestinians, including two women and a child, were reportedly hurt in the strikes.
Hamas said it fired rockets to respond to "Zionist aggression", after accusing Israel of killing five of its fighters.
Israel denied the claim. It says it has now begun an open-ended aerial operation to end rocket fire from Gaza.
Israel says the operation will be expanded in the coming days and that 1,500 reservists have been called up.
Tension has spiked in recent days over the murders of three young Israelis and a Palestinian teenager.
BBC
