The dead included a minor and at least 126 protesters were wounded by Israeli live fire during 'right of return' protests, Gaza's Health Ministry says.
Israeli forces shot dead three Palestinians, including a 13-year-old boy, as thousands of people protested on Friday along the fence dividing Gaza and Israel, Gaza's Health Ministry said.
The ministry said the boy was struck in the chest, a 24-year-old man was shot in the back and another man, 28, succumbed to his wounds at hospital.
It added that 126 protesters were wounded by live fire.
Israeli aircraft carried out two air strikes in what the Israeli army said was a response to the firing of explosives.
One strike hit less than 50 metres away from two clearly marked press cars belonging to The Associated Press.
A cameraman said journalists, ambulances and vendors were in the area, about 250 metres away from the fence. There were no casualties.
'Right of return' protests
Demonstrators demand the "right of return" to their homes and villages in historical Palestine from which they were driven in 1948 to make way for the new state of Israel.
They also demand an end to Israel's 11-year blockade of Gaza, which has gutted the coastal enclave's economy and deprived its two million inhabitants of many basic commodities.
According to the health ministry, more than 190 Palestinians have been killed and 20,000 others wounded since the rallies began on March 30.