An Israeli air strike on a house in Gaza has killed three senior Hamas military commanders, militants say.
Mohammed Abu Shamala, Mohammed Barhoum and Raed al-Attar died in the attack near the southern town of Rafah.
The grandfather of three children killed by an Israeli air strike weeps outside a morgue in Gaza City.
They were among at least six killed, a day after Hamas’s military chief Mohammed Deif reportedly survived a strike that killed his wife and child.
An Israeli was severely injured as rockets were fired into Israel on Thursday, the army said.
Hostilities resumed after peace talks collapsed on Tuesday.
Israel has vowed to pursue its campaign until “full security” is achieved.
Six weeks of fierce fighting have left at least 2,103 people dead, all but 67 of them Palestinians and most of them said to be civilians.