we find koeberg are.d now, how did they do it? straight back out to chris- swecker, a former fbi assistant director .rsta chris , we understand that there's dna atnd the scene there understand that somehow cops understand that somehow cops match dna at the scene to thiseo white hyundai elantra. dna it's got to be dna that they found at the right place because this wasfound at a realy house. there's nothing wrong with that. that's not a felony. therthat e. good it's having a good time.a lot op a lot of people in and out. it hadeo to be dna in the right place, like on the bed sheets,pl on the victims, on the doorknob, mixed in blood . ho how did knomixe they do it? how did they affect thisw did arrest? thitwell, nancy, as you know,tw there's there's two types of trace evidence that specifically identify a person, and that's fingerprintspa see and dna. fingerprints have been around around f i'm surehat they got or it's likely that they got fingerprints. they're my sources tell me that they did get some good dnaid profiles, but this p

so how did they zero in on brian koeberg or. here now with analysis, fox news contributor and retired lapd detective mark furman and fox news contributor and retired d.c. polices co detective ted williams. ted , let's start with you. you've seen a big news of the day. give us your top line analysis lin of what's going on .hat' >> jason , i got to tell you, i'm jubilate that they have been able to locate a suspectee in this case.to i believe that with forensics as well as the public tips, as well as the latching on to that automobile and possiblynd dna found at that scene that led to the arrest of all thisan gentleman, cobargo, i havei have to believe that law enforcementu ,while they haven't givenh, the public much, they have a greahavet deal of evidence thg they are working with and from c and i think that all vehicle, that white vehicle that was confiscated, stanton, ohio, stand to be corrected.te pennsylvaniad in, that that whie vehicle has wealth of evidence e and i'm sure they are processed. and that white vehicle, as well

twenty eight year old grad student brian koeberg wanded s takenn penn into custody in pennsylvania and charged with four counts of first degree murder.. according to one report, kielburger askedto one police if anyone else had been arrestedrr. at this hour at ts