That was a nine-minute press briefing at the, of the investigation of the murder of Charlie Kirk in Utah.

During our live coverage is Justice, MSNBC Justice correspondent Ken Delaney, and also with us, Andrew Weissman,

former chief of the criminal division of the Eastern District of New York, former FBI General Counsel and MSNBC legal analyst.

Jim Kavanaugh, an MSNBC law enforcement analyst and former ATF special agent in charge,

will be joining us in a moment.

I want to get Jim Kavanaugh's reaction to the investigative material that was just released.

He has experience on the scene of such investigations.

But, Andrew Weissman, let me go first to you with your experience in the FBI and what we just listened to.

Well, in many ways, it is the blueprint that was set in the Boston bombing case where you have this outreach to the public and the dissemination of information.

It was striking to me that that was essentially the purpose of the press conference was to get that out there to the public.

So that anybody with information about what he looks like, his t-shirt,

his cap, his shoes, his backpack, all of that is something that they're looking for leads,

and that obviously is something that the public can and should do. I did want to make a reference to something that people might not know about,

because there's been a lot of reporting about having found the gun. And I want to make sure

people understand in this country, it can be very, very difficult to trace a gun to a perpetrator.

Unlike a car where when you have a car, we can know from soup to nuts when it came off the lot and every single owner who had it,

that is prohibited in this country. So you can have for guns, it's prohibited. Sorry, for guns, it is prohibited in this country. So you can have, for guns, it's prohibited. Sorry, for guns,

it is prohibited. You can figure out when the gun was manufactured, but it is very hit and miss if you

can trace who has owned it. There are all sorts of loopholes. And so just having the found the gun,

it obviously can be useful. There can be information there. But it is not the case that there is

a record in the same way that you would have for the VIN, the vehicle identification number,

for a car where you know exactly from person to person to

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