In a statement, Rashwan reiterated the syndicate's call for the international community and the international criminal court "to hold the Israel occupation accountable for its recent crime against the martyr of the press."
The statement also called for the opening a broader international investigation into all the repeated crimes of the Israeli forces against journalists, especially Palestinians, in violation of all international laws.
Abu Akleh, 51, a widely respected Palestinian on-air correspondent who spent a quarter-century covering the harsh realities of life under Israeli military rule, was shot dead while covering an Israeli raid in the occupied West Bank town of Jenin on Wednesday.
Abu Akleh's fellow journalist Ali Al-Samoudi was also injured in the incident.
Thousands of mourners laid Abu Akleh to rest in Jerusalem on Friday.
Since Wednesday, more than 1,500 Egyptian journalists have signed a statement condemning the Israeli killing of Abu Akleh and called for an international probe into Israeli other war crimes against journalists in Palestine.
Abu Akleh's name has been trending across social media worldwide, with a great deal of supporters condemning the attack against her.