The fragile truce in Gaza faced its first major test on Sunday after Israel alleged Hamas had violated the ceasefire and hit back with air and artillery strikes.

An Israeli security official told the Associated Press, on the condition of anonymity pending a formal announcement, that the transfer of aid into Gaza is halted "until further notice."

Earlier Sunday, Israel's military said it hit multiple targets in the Gaza Strip using aircraft and artillery, after it accused Hamas of shooting at Israeli soldiers. Military officials later said two soldiers were killed.

An Israeli military official told CBS News that Hamas had targeted its soldiers with a rocket-propelled grenade and sniper fire.

"Both of the incidents happened in an Israeli-controlled area, east of the yellow line," t

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