What does this have to do with internal affairs? Plenty, as most departments have policies against unauthorized release of information. Most importantly, IA is also investigating the incident. We do not need information released anymore than does the criminal investigations side of the house. So, there is vested interest for all.
Should your department have an officer-involved shooting, think of these issues. We are part of our communities. We are here to serve and protect. We must work with our citizens to restore calm in a situation and bring a tragic incident to a proper close. We have to do so openly and honestly.