The finding, in a statement from State Department spokesman Ned Price, came after what the U.S. said were inconclusive tests by independent ballistics experts under U.S. oversight of the bullet fragment recovered from Abu Akleh's body.

``Ballistic experts determined the bullet was badly damaged, which prevented a clear conclusion'' as to who fired the shot, Price said in the statement.

Abu Akleh, a veteran correspondent and Palestinian-American citizen who was well known throughout the Arab world, was shot and killed while covering an Israeli occupation military raid on May 11 in the Jenin refugee camp in the occupied West Bank.

Palestinian eyewitnesses, including her crew, say Israeli troops killed her and that there were no militants in the immediate vicinity.

Reporter reacting (R) as an unidentified man tries to lift the body of the channel's veteran journalist Shireen Abu Aqleh (Akleh) from the ground after she was fatally wounded by gunfire in Jenin in the occupied West Bank on May 11, 2022. AFP 

Israel says she was killed during a complex battle with Palestinian militants and that only a forensic analysis of the bullet would confirm whether it was fired by an Israeli soldier or a Palestinian militant.

It has strongly denied she was deliberately targeted but says an Israeli soldier may have hit her by mistake during an exchange of fire with a militant.

Israeli police confront mourners as they carry the casket of slain Al Jazeera veteran journalist Shireen Abu Akleh during her funeral in east Jerusalem, Friday, May 13, 2022. AP

U.S. security officials had examined the results of both Palestinian and Israeli investigations and ``concluded that gunfire from IDF positions was likely responsible for the death of Shireen Abu Akleh,'' Price said.

The U.S. ``found no reason to believe that this was intentional but rather the result of tragic circumstances during an IDF-led military operation against factions of Palestinian Islamic Jihad,'' Price said.