i said, you need to go get detective salm now.s hands and kind of has it bent a little bit. he's like look at this. immediately i looked at this and i'm like oh, my god. what he's holding in his hand is an indented writing copy of the diagram that we received in the mail. >> reporter: this is the sheet of paper detective ruiz found. you can see the indentations of the bolt threads in the middle of the page about a third of the way down. and here's the same sheet of paper enhanced by the atf crime lab. and here is the original bomb diagram mailed to investigators back in august. >> the most amazing thing in the world. this is the smoking gun. >> unbelievable. couldn't believe it. exciting doesn't begin to describe. elated maybe. >> reporter: then what happens? >> i went out and arrested paul moore. >> coming up, pete moore seems to be in the clear, but he's got yet another shock in store. >> there is no scale for this. this changes you forever. . do gonna double your lovin', double your fun you get two for the price of one double y

that's the wall that turkey built so that syria the mountains but what we saw today sporadic shelly's salming i wouldn't say a real intense hours of shelling tank fire two or three locations that were targeted that we saw there was sort of a build up of what looked like defensive. barricades blocks concrete blocks bulldozers and gravel being brought into that wall where they were working before the military move us all in so you know when you talk about a ground operation you do think of troops moving towards a target what we are seeing of course is a buildup along the border and also a buildup inside syria with the free syrian army this is the rebels that turkey backs that anger has made clear will be part of this operation but we're not seeing at the moment. a move towards a freend so even though we've heard this word the practicality of it as of yet hasn't really changed what we've seen in the last couple of days i think the big question marks i mean still remains the russian factor we know talks are still ongoing with senior. turkish and russian officials in sochi so i think the question