Not apologizing for the specific situation, but when much of the media landscape reports information with more of a sense of immediacy, rather than providing a concrete historical record, it's fair to shield information if there's information gaps. The secondary situation is rarely possible in the immediate moment, especially in restricted places. "Friendly fire" or accidents do occur, and that makes for a totally different headline, so it's understandable and even responsible to not lay immediate blame, even if you want to, or it's almost 99% certain who is at fault. Thus, an article which appears 30 minutes (or a day or two) after its occurrence versus one that is several days old can have a vastly different approach to a headline, and is not an entirely fair comparison...it happens all the time. In the past, a physical media outlet or over-the-air broadcaster had to issue a retraction or just make a new story out of a news event. Who said social media is fair, anyhow?
Yep, bias about a lack of bias causing more bias.