Probe of US Spec Ops killings excluded key eyewitnesses

The failure to interview key eyewitnesses, along with the refusal to make public any of the investigation's findings, continued a pattern of behaviour by McChrystal's command of denying that the SOF unit had begun a cover-up of the killings immediately after the raid.

Source:
http://rawstory.com/rs/2010/0706/report-mcchrystal-probe-spec-ops-killings-excluded-key-eyewitnesses/