Doctors Without Borders on Thursday said an Israeli strike had killed one its workers, the 14th member of the medical charity to have died since the beginning of the Israel-Hamas war in Gaza.
The strike also wounded four others, one of whom was in a serious condition with shrapnel wounds, said a statement by the group, which goes by the French acronym MSF.
The United Nations and rights groups have frequently condemned the high death toll of humanitarians and aid workers in the Palestinian territory, as Israel pursues its offensive against the Islamist group Hamas.
"The attack took place on a street where our teams were waiting to take a bus to the MSF field hospital in Deir el-Balah, Gaza," the charity said. "All staff were wearing MSF vests, clearly identifying them as medical humanitarian workers."
The death of occupational therapist Omar Hayek, 42 comes less than two weeks after that of his colleague Hussein Alnajjar, also in Deir el-Balah, MSF said.
"Omar was a quiet man of profound kindness and utter professionalism," the charity said, adding that he had dedicated "his life to restoring strength and dignity to thousands of patients".