NEW HAVEN, Conn. - A Yale graduate student found stuffed in the wall of a research center had been suffocated, the medical examiner reported Wednesday as police awaited DNA tests on evidence taken from a lab technician who worked in the building.
Police call Raymond Clark III a "person of interest" in the slaying of Annie Le. Authorities hope to compare DNA taken from Clark's hair, fingernails and saliva with more than 250 pieces of evidence collected at the crime scene on the campus and from Clark's Middletown, Conn., apartment.
Le's body was found Sunday behind the wall of the basement where lab animals are kept. The Connecticut state medical examiner said Wednesday that Le, 24, died of "traumatic asphyxiation."
Authorities released no details on how she died, but traumatic asphyxiation could be consistent with a choke hold or some other form of asphyxiation.
Police served two search warrants - for DNA from Clark and for items in his apartment - late Tuesday.
They served two more Wednesday morning, for more items from the apartment and for Clark's Ford Mustang, police Chief James Lewis said.
Investigators said they expect to determine within days whether Clark, 24, should be charged in the killing. He was escorted in handcuffs from his apartment and released early Wednesday into the custody of his attorney, police said.
Clark is not talking to police, Lewis said.