As several videos showing the fatal shooting of 37-year-old Alex Pretti in Minneapolis surface, so do questions about how the incident unfolded.

While federal officials have offered a different account of what happened from local and state authorities, CNN senior legal analyst Elie Honig broke down some questions on CNN Newsroom with anchor Jessica Dean.

Some of the answers have been edited for length and clarity.

DEAN: What is the legal standard for a federal agent to use deadly force justifiably, and was Saturday’s shooting an appropriate use of that force?

HONIG: Any time we have a use of lethal force by any law enforcement official, this is the key legal question: Did that official reasonably believe that the use of force was necessary to prevent an imminent risk of death or serious bodily injury? So, it’s a very high bar.

DEAN: Where is the line between obstructing a law enforcement operation and legally observing or protesting?

HONIG: A person is permitted to observe and video a law enforcement operation or make noise and blow whistles. If, however, a person is standing in the way of, or interfering with, the law enforcement operation, that’s over the line. If a person is obstructing, they can be physically moved using the least amount of force necessary. They can be charged with obstruction. It does not, however, open the door to assault or use of lethal force.

DEAN: Where do you see this going in terms of getting to the truth, now that there have been robust calls for an investigation and state and local authorities have sued the federal government?

HONIG: The way this normally works is you will have the involved agency, DHS, doing an internal administrative investigation. You would have an investigation for potential criminal charges. However, there are two problems. One, the feds have essentially said, “We’re not going to work with the state authorities,” which is something you would always do in these cases. And two, we’ve heard leading officials come out and make statements that A, appear to be false based on the video, and B, undermine any notion of there being a true, independent investigation. So they’ve been unclear thus far about what investigation is happening, but what’s happening here is highly abnormal.