TEHRAN, Young Journalists Club (YJC) - Israel's military confirmed that it targeted an observation.
Hostilities over the Gaza frontier have soared since Palestinians began mass-demonstrations on March 30, which Israel deems cover for attempts to breach the border fence.
At least 113 Palestinians have been killed and thousands hurt by army gunfire in the protests, drawing foreign censure.
There have been no Israeli casualties along the Gaza frontier, but Israel has reported extensive damage to farmland on its side of the border from firebomb-bearing kites flown over from Gaza, Reuters reported.