An Israeli airstrike failed to kill the commander of Hamas armed wing in Gaza, according to the militant group.
In a televised statement, a masked spokesman for the Izz-el-Din al-Qassam Brigade said Israel had missed its target, Mohammed Deif.
Israeli fighter planes bombed a house in northern Gaza, killing Deif's wife, his seven-month-old son and three other people yesterday.
The spokesman said: "The leaders of the enemy were behind their offices looking at the screens and their intelligence and apparatuses made them believe that the moment of celebration was imminent. You have failed and you have missed."
He also warned of further Hamas rocket attacks on Israel's strategic interests, including Ben Gurion airport east of Tel Aviv from early on Thursday morning.
There have been two days of quiet in Gaza. No rockets or missiles, no more destroyed houses, no more ambulance sirens screaming.
A three-year-old girl has been rescued from Gaza and brought to London for life-saving heart surgery.
A small team of NHS doctors and surgeons is travel to Gaza to set up facilities and establish how best to use specialists and equipment.