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But that's on the one side of the investigation. but the crucial shot of the investigation right now is the preservation and the collection of evidence at this crime scene. charles: commissioner, ed davis, i want to bring you back in because you also brought up the notion of motive and how critical it is at this particular time. >> right. it really is because right now this appears to be a murder and that is under the jurisdiction and investigation of the pittsburgh police department, but if there's a nexxis to terrorism here, the fbi will come in and immediately take over the investigation. s...

To bring about this concearnage all of those are happening in dual investigations. as to the crime scene, they are collecting evidence at this stage. meaning there are shell casings around there. if they have guns, are they collecting that kind of information. they have a forensic team that will be on that scene doing a forensic scrub. so as i've said, you have a dual investigation. as it pertains to the shooter himself, it is my understanding that he may very well have been injured. if that's the case they're moving him to a hospital, but at some stage they're going to try to question him and...

Ones. at some point, i would assume and hope soon, that the police will be able to articulate perhaps who is alive, who isn't, who is wounded. how do you see that playing out? >> i see that happening sooner rather than later. they need to positively identify everyone who was there. they want to be sure that they do not misidentify anyone because that would be a tragedy upon tragedy. but they're going to work very methodically before they release any information. with regard to the crime scene and what they're going to gather, they're going to release information so long as the information does...

Fast as possible? >> well, the bottom line is, charles, irrespective of the weather, these law enforcement officers are trained to immediately go into this kind of a scenario or situation. they train monthly and weekly to do-- for these kinds of scenarios, so, primarily, they don't concern themselves about the weather. they're concerned about one thing and one thing only, putting the shooter down. charles: right. >> and neutralize that crime scene and it's now, charles, unfortunately, a crime scene. charles: is there urgency though to -- would there be a sense of urgency to do it before it bec...

Was the police official clearing it up, a lot of the questions here that the shooter is in custody. there have been multiple casualties, the local media puts it at four. not confirmed yet by the police department. they are still clearing the poi building, a point that you made earlier. the initial report of two officers shot, now at three. please finish, ted. >> as i was saying, now have a crime scene and that crime scene has to be processed and there's a dual investigation going on. not only the crime scene, but now that they've got the shooter in custody, they're going to try, as i've said, ...