ROME, Italy (CNN) -- DNA belonging to Raffaele Sollecito, a suspect in the murder of a British student in Italy, was found on a bra belonging to the victim, his lawyer said Friday.
"DNA traces were found on the hook of the bra that had been cut off with a knife," the Italian's lawyer Luca Maori told CNN.
The body of Meredith Kercher, 20, was found half-naked with a stab wound to her neck on November 2 at a villa in Perugia, where she was studying.
Three suspects remain in police custody: Sollecito, 23; his American girlfriend and Kercher's roommate Amanda Knox, 20; and Ivory Coast native, Rudy Guede, 20. All three deny any involvement in the killing.
Maori admitted that the latest finding complicated the position of his client, who maintains he was not in the house at the time of the crime. He said further tests were necessary.
"It is not a strong DNA trace" Maori said. "My client visited the house frequently and that trace could pre-date the murder."
He said the evidence was uncovered during a second inspection of the crime scene in mid-December.
In other developments, additional DNA belonging to Guede was found on a handbag and a jumpsuit belonging to the victim, Walter Biscotti, Guede's lawyer told CNN.
Guede's palm print previously had been found on a pillow at the crime scene. His DNA also was found on the victim's body as well as in a bathroom next to the crime scene.
He is the only suspect who has admitted being in the villa on the night of the killing, although he claims Kercher was killed by an unknown attacker when he was out of the room.
Sollecito and Knox, from Seattle, told investigators they were in the Italian's apartment watching a movie when the crime occurred overnight between November 1-2.
Investigators, however, say they have evidence tying both of them to the scene. Earlier searches of the villa revealed a bloody footprint left by a Nike sports shoe next to the victim's body, which police insist belongs to Sollecito.
His lawyers deny this, saying the print is similar but does not match, and that no traces of blood were found on the shoe itself.
Investigators said they have also found traces of blood belonging to both Knox and Kercher mixed together in a bathroom next to the crime scene. E-mail to a friend