The teenagers, both aged 16, were identified as Mumen Hilles and Muntasser al-Batniji.
The Israeli army said it was not aware of any such incident.
Earlier, another three Palestinians, one of them a teenager, were wounded by Israeli gunfire in two incidents near the Gaza-Israel border, medical and security sources said.
Two of them, both in their 20s, had been shot in the legs while collecting building material in an area near the northern town of Beit Lahiya, medics told AFP.
Further south, another boy was shot in the leg near his home in Khuzaa, a village east of the city of Khan Yunis and close to the border, security officials said.
The Israeli military confirmed the shootings, saying troops had in both cases aimed for the legs after the suspects failed to heed warning shots.
Israeli troops often fire towards people in the border zone, particularly in the north of impoverished and blockade Gaza where Palestinian youngsters try to make some money by scavenging gravel.
Also on Friday, Palestinian militants fired a rocket into southern Israel from Gaza, the army said.
The rocket landed in an open area without causing casualties, it said in a statement, adding that Palestinians have fired some 200 rockets and mortars into Israel this year.
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The Israeli army said it was not aware of any such incident.
Earlier, another three Palestinians, one of them a teenager, were wounded by Israeli gunfire in two incidents near the Gaza-Israel border, medical and security sources said.
Two of them, both in their 20s, had been shot in the legs while collecting building material in an area near the northern town of Beit Lahiya, medics told AFP.
Further south, another boy was shot in the leg near his home in Khuzaa, a village east of the city of Khan Yunis and close to the border, security officials said.
The Israeli military confirmed the shootings, saying troops had in both cases aimed for the legs after the suspects failed to heed warning shots.
Israeli troops often fire towards people in the border zone, particularly in the north of impoverished and blockade Gaza where Palestinian youngsters try to make some money by scavenging gravel.
Also on Friday, Palestinian militants fired a rocket into southern Israel from Gaza, the army said.
The rocket landed in an open area without causing casualties, it said in a statement, adding that Palestinians have fired some 200 rockets and mortars into Israel this year.
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