dr. michelle dupree, medical examiner. with the arrest of this raymond clark iii, does this mean his dna was all over the crime scene? >> it probably means they found some at the crime scene or on the body, absolutely. >> what we know, they collect 200 pieces of evidence. seems like a quick turnaround to get that arrest. what have they found? how did they connect the dots? >> they may have found epithelial cells under the fingernails that would have matched the suspects. they could have found some kind of fluid. anything that would give them dna, positive results. >> again, an arrest, raymond clark iii arrested and charged with the murder of annie le. let's get back to the question,@ who have this guy? richard levin, yale university president. kind of talked about this. give us a thumbnail of who raymond clark iii is. >> mr. clark has been a lab technician at yale since december of 2004. the supervisor reports that nothing in the history of his employment here gave any indication that his involvement in such a crime might

dr. michelle dupree, again medical examiner. with the arrest of raymond clark, iii, does this mean his dna was all over this crime scene, is that what you can deduct here? >> it probably means they at least found some on the crime scene or on the body, absolutely. >> okay. what we know here, michelle, they collect 250 pieces of evidence. seems like a pretty quick turnaround to get that arrest. what do you think they found? how did they connect the dots here? >> they may have found epithelial cells under the fingernails that would match the suspect's. they could have found some kind of fluid, anything that would actually give them dna, positive results. >> okay. that's what we have here, again an arrest, raymond clark, iii, arrested and charged in the murder of annie le. let's get back to the question of who is this guy? richard levin, yale university president talked about that. gave us a thumbnail of who raymond clark, iii, is. >> mr. clark has been a lab technician at yale since december 2004. his supervisor reports that not

dr. clay watson, forensic psychologist and michelle dupree and marsha chambers, editor for the branford eagleor three years. she came to yale about three years ago. and he was a techie, which is a kind of a nicely put word for a guy who cleaned the cages and took care of the rats and rodents and apparently he had certain standards and they were i gather involved in some sort of e-mail relationship because he was concerned she wasn't taking good enough clean enough care of the animals. that's still speculative. the police have been pretty quiet about exactly what happened. but that's the basic situation. they were in contact. >> okay. marsha, getting the e-fail exchange back and forth, interesting when you talk about someone with standards like that, very intense standards, that's the picture you're painting. can you tell us where that information is coming from? >> it's the scuttle but around, not affirmed specifically. the cops are being pretty close to the vest on this case. so -- >> got you. okay, cnn, hln not able to confirm that. we have so many questions about this. when we talk evidenc