The cop on stage said they have no idea who it is. He said that if he were in room then no one would know he wasn’t a cop. Then he said that is was for sure a police impersonation. They know nothing about the assassin other than he is indistinguishable from a cop, but definitely not a cop. I see some faults in that logic.
In subreddit r/law
In a post titled:
Minnesota state senator John Hoffman in Champlin and Minnesota state representative Melissa Hortman in Brooklyn Park were reportedly shot in their homes by a gunman impersonating a police officer.