Then Israel suggested that she might have been hit by the crossfire from an Israeli soldier being fired on by Palestinian gunmen. But all the investigations have shown that Palestinian fighters were nowhere near Abu Akleh when she was shot. She was, however, clearly visible to a unit of Israeli soldiers.
More recently, Israel has tried to shift the blame onto the Palestinian Authority, saying it has not cooperated by handing over the bullet that killed Abu Akleh or by agreeing to hold a joint investigation. As ever, Israel behaves as if the party accused of the crime should be the one to oversee the investigation.
The Palestinian Authority rightly refuses requests for cooperation, arguing that they are being made in bad faith. Israel would exploit any joint investigation to concoct "a new lie, a new narrative", the PA observes.
A meaningful questionIn reality, Israel already knows exactly which of its snipers pulled the trigger. The only meaningful question at this stage is, why? Was the shooting committed by a hot-headed soldier, or was it an execution carried out on orders from above? Was the intention to target Abu Akleh specifically, or did it not matter which of the group of journalists she was among was hit?
Israel, however, isn't the only party discomfited by the media's repeated investigations.
They have also served to embarrass Joe Biden's administration. Antony Blinken, the US secretary of state, has called for an "independent, credible investigation", while his department has underscored the need for a "thorough and independent investigation".
The New York Times and the other major media outlets have all proved that just such an investigation can be carried out. And yet the silence from the US administration at their shared findings is deafening.
There are two further, possibly less obvious conclusions the rest of us should draw from these efforts to identify who was responsible for killing Abu Akleh.
The first relates to the exceptional nature of the investigations conducted by the US media. Concern at the killing of a Palestinian is far from the norm. In this case, it appears to have been prompted by an unusual coincidence of facts: that Abu Akleh was a high-profile, internationally respected journalist and that she had US citizenship.
In other words, she was seen not just as any ordinary Palestinian, or even as a Palestinian journalist, but as one of the western media's own.
Total impunityIn murdering Abu Akleh, Israel reminded journalists at the New York Times, AP, CNN and the Washington Post that the lives of their correspondents covering Israel and Palestine are in more danger than they possibly appreciate. In killing her, Israel crossed a red line for the western media - one premised on self-interest and self-preservation.
There are parallels with the media's special treatment of the killing of Saudi journalist Jamal Khashoggi - and for similar reasons. Khashoggi, who was working for the Washington Post, was murdered and his body dismembered during a visit to the Saudi embassy in Turkey.
As with Israel, Saudi Arabia's leadership has an appalling human rights record and is not hesitant to jail and kill its opponents. But Khashoggi's murder provoked unprecedented outrage from the media - outrage that Saudi Arabia's many other victims have never warranted.
The fact is the US media could have conducted similar investigations into any number of Palestinian deaths at the hands of the Israeli security services, not just Abu Akleh's, and they would have reached similar conclusions. But they have consistently avoided doing so.
There is a danger inherent in focusing exclusively on Abu Akleh's killing, just as there was with focusing exclusively on Khashoggi's. Each has the effect of making it look as though their deaths are exceptional events requiring exceptional investigation - when they are each an example of a longstanding pattern of regime lawlessness and human rights abuses.
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