Israel retaliated to Hamas shots fired at troops on the Israeli side of the Gaza border by launching strikes in the coastal enclave. Palestinian security sources in Hamas-ruled Gaza told AFP that the Israeli fire hit Hamas military observation posts at three locations along the frontier. They said there were no reports of Palestinian casualties. "No injuries to soldiers were reported," said the Israeli military in a statement. Palestinians in Gaza have for more than a year gathered at least weekly along the border for often-violent protests, calling on Israel to end its blockade of the enclave. The Israeli statement did not say if there were mass protests taking place at the time of Fridays incident. The Palestinian health ministry in Gaza later said in a statement that 15 people were wounded by Israeli fire during border demonstrations, including "two paramedics and one journalist". It gave no further information. At least 264 Palestinians in Gaza have been killed by Israeli forces since the protests began. The majority were killed during clashes, with others hit by tank fire or air strikes. Two Israeli soldiers have been killed over the same period.