Gaza: Israeli artillery cannons shelled the Gaza Strip on Saturday, witnesses on both sides of the border said, heralding a possible escalation to a new tactic in more than a week of fighting.
Palestinian witnesses said the barrage caused a large explosion in Gaza City as well as a series of blasts stitching the nearby frontier with Israel.
There was no immediate word of casualties.
Already, the Israeli air campaign has killed at least 433 Palestinians. Israel says it is trying to stop Hamas rocket fire.
Israel has massed ground forces on the Gaza border ahead of any decision to invade the Hamas-ruled territory.
