Israeli Troops and Tanks Slice Deep Into Gaza

The ground invasion risks turning into intense urban combat, with house-to-house fighting, sniper fire and booby-traps. Hamas is believed to have some 20,000 gunmen and has had time to prepare.

Israel infantry soldiers wait before leaving Israel for the northern Gaza Strip, Saturday, Jan. 3,...

Israel infantry soldiers wait before leaving Israel for the northern Gaza Strip, Saturday, Jan. 3, 2009. Israeli tanks and infantry entered Gaza after nightfall Saturday, launching a much anticipated ground offensive in a widening war on Gaza's Hamas rulers. Israeli security officials said the operation is likely to go on for several days, but that the objective is not to reoccupy Gaza. (AP Photo/Bernat Armangue)

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To guard against hidden explosives, Israel's ground forces moved through fields and orchards with bomb-sniffing dogs.

Since the ground assault began, 64 Palestinian civilians have been killed, said Dr. Moaiya Hassanain, a Health Ministry official. The new deaths brought the death toll in the Gaza Strip to more than 512 since Dec. 27. The tally is based on figures from the U.N. and Palestinian health officials as well as a count by The Associated Press.

Five Israelis have been killed since the offensive began. One soldier has been killed in the ground operation and about 40 were wounded, some of them in heavy exchanges of fire near the militant stronghold of Jebaliya, a town on Gaza City's northern outskirts, the army said. Heavy Israeli casualties could undermine what has so far been overwhelming public support for the operation.

At one hospital in the northern village of Beit Lahiya, medics carrying three injured children in their arms rushed them to treatment. One of the children had a blood-soaked bandage wrapped around his head and covering his eyes.

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An Israeli shell also struck an ambulance in the town, killing a paramedic, said Marwan Abu Ras, a hospital administrator. The relief organization Oxfam, which said the ambulance belonged to a partner organization, al-Awda Hospital, confirmed the shelling.

An airstrike hit another ambulance belonging to the Hamas-run Health Ministry in Gaza City, killing three other paramedics, said medic Jamal Hawajiri. That ambulance crew was driving to a Hamas training site where there were reports of wounded.

An Israeli army spokesman said he had no information on the incidents.

The Israeli army said it had killed dozens of armed Hamas gunmen, but Gaza officials could confirm only a handful of dead fighters — in part because rescue teams could not reach the battle zones.

Condemnation of Israel's ground operation poured in from the Middle East and Europe.

"The violence has to stop," said EU External Relations Commissioner Benita Ferrero-Waldner.

French President Nicolas Sarkozy scheduled talks Monday with Israeli and Palestinian leaders. While blaming Hamas for causing Palestinian suffering with rocket fire that led to the Israeli offensive, Sarkozy has condemned Israel's use of ground troops, reflecting general world opinion. Sarkozy and other diplomats making their way to the region are expected to press hard for a cease-fire.