Bryan Die News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Grandson commit suicide. >> reporter: then, the next day, when state investigators led by agent ken thompson of montana's department of criminal investigation arrived and looked at the ruined crime scene -- >> my partner and i would look at each other and think, oh, my lord, you know? >> reporter: yeah. >> it certainly makes things very difficult. >> reporter: difficult? oh, yes. difficult was not the half of it. coming up -- what did happen to dr. rein? >> we had been told that he had committed suicide. >> did you believe that could be true? >> absolutely not. >> blood on the doorstep. bull...

I think that bryan then struggled to get in to call for help. that he sat there. i think the perpetrator stood there and watched bryan die. >> reporter: and as for the location of the gun so close to dr. rein's own hand? so the killer must've put it there? >> correct. >> reporter: but were there any fingerprints on the gun? >> no. it looked like it had been wiped off with a solvent. >> reporter: so investigators now thought they knew how the murder occurred. but when it happened? that wasn't clear at all. friday night? saturday? it was an important question, of course. but just how important t...

The shooter? >> pretty close range. >> so, if they struggle and the gun went off, it would be, right? >> yeah. some kind of conversation went on and a struggle ensued. two shots went off, and then the third shot into his chest. i think that bryan then struggled to get in to call for help. that he sat there. i think the perpetrator stood there and watched bryan die. >> and as for the location of the gun so close to dr. rein's own hand? so the killer must've put it there? >> correct. >> but were there any fingerprints on the gun? >> no. it looked like it had been wiped off with a solvent. >> so ...