You don't understand why releasing a report like that could lead to a lawsuit?
The IUCRR (International Underwater Cave Rescue and Recovery) team writes detailed analyses of the cave diving accidents in which they become involved, and they provide them to the police. (I am the actual author of one of their reports.) They used to publish them on their website, but they stopped doing so when attorneys advised them that even though they were not in any way involved in the accident, they could become the subject of a lawsuit if someone objected to something in the report.
I wrote cave diving accident reports for the National Speleological Society, and that is a concern for NSS as well. Here are some examples of cases in which I have been involved.
- In one incident, the two principle people involved in a non-fatal (but darned close) incident gave me two very, very different accounts of a key part of the incident. I believed one of them, but the other person refused to allow me to include anything he said in the report (yes, permission was necessary).. He threatened to sue. (He would not look good.) After much discussion about a possible lawsuit, we left that part of the narrative out completely, which had the net effect of supporting the person I thought was lying.
- In another incident, the people who recovered the bodies were also charged with doing the analysis. It took them more than a year to provide their report, which I used as the basis of mine. I had a long email exchange with the author about it all, and he explained that there were things they simply could not understand about the accident, no matter how they analyzed it. If not worded very carefully, one of the victims could potentially look bad, which might result in an unpleasant response from the family.
- In the most troublesome case on which I worked, there was a lawsuit and a settlement, followed by lots of incriminations on social media before I was assigned the case. My investigation took many, many hours, and I was left in a state of real confusion. I am convinced that one of the people involved lied, both to me and to the police, pointing a finger at someone else to avoid his own potential liability. I am convinced an expert witness gave a false report in order to serve the best interests of the party paying his fees. (I got that idea by interviewing the expert witness.) My final report was a major exercise in tap dancing to avoid potential liability of my own. As it was, a very rough draft that included some personal opinions not meant to be made public was leaked, and I suffered greatly from the recriminations those who did not like those opinions.