I would kind of agree with waiting for any enquiry to find a verdict, but then IMHO the IPCC does not have the scope to deal with all of the circumstances leading to the outcome of this. I think this would benefit from a more holistic dept doing the enquiry, as this whole episode is likely to have begun long before the first shot was fired IMHO, unless of course the IPCC have control over the prison service or any medical professionals or social services involved in this case!