Secretary of State pushing for cease-fire

MIDDLE EAST (NEWSCHANNEL 3) - Secretary of State John Kerry is heading back to the Middle East to push for a cease-fire between Israel and Hamas.

Secretary of State John Kerry's trip comes on the heels of the deadliest day of fighting yet.

The United Nations Security Council held an emergency meeting late Sunday night to discuss civilian casualties and called for an immediate halt to the fighting.

Gaza health officials say the death toll among Palestinians has now topped 500 since the conflict started.

Tens of thousands have fled their homes for safety.

A U.N. draft resolution calls for the protection of civilians in Gaza and for immediate humanitarian assistance.

"The violence must stop now," said UN Secretary General Ban Ki-Moon.

"The tragedy in Gaza is beyond comprehension. The hospitals are overwhelmed with number of injured civilians," said Palestinian Ambassador to the U.N. Riyad Mansour.

"We support the Egyptian effort to have a cease-fire, which Israel joined into, which does not have preconditions," said Kerry.

13 Israeli soldiers were also killed Sunday and we now know two American citizens were killed there as well.