At least five people have been killed and 70 injured by an Israeli strike on a hospital in Gaza, Palestinians say.
Doctors say several Israeli tank shells hit the hospital's reception, intensive care unit and operating theatres.
Overnight, more than 30 members of two Palestinian families died in Israeli strikes, Gazan health officials said.
On Monday evening Israel said seven of its soldiers had been killed in the past 24 hours, bringing the number of Israeli military dead to 25.
Two Israeli civilians have also died in the recent violence.
The Palestinian death toll from the two-week conflict has now passed 500, the majority of them civilians, according to Gaza's health ministry.
Israel says it has killed more than 170 militants since Thursday night, when it launched the ground offensive phase of its two-week old operation to end rocket fire from Gaza.
Ten militants were killed on Monday after using tunnels to get into Israel near the town of Sderot.